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2. And the seraphim stood upon it. Having declared that God appeared to him full of majesty and of glory, he adds, that God was attended by angels, whom the Prophet calls seraphim on account of their fervor. Though the etymology of this word is well known, yet various reasons are adduced. Some think that they are called seraphim because they burn with the love of God; others, because they are swift like fire; others, because they are bright. However that may be, this description holds out to us, as in sunbeams, the brightness of God’s infinite majesty, that we may learn by it to behold and adore his wonderful and overwhelming glory.

Many think that there were two seraphim, as there were two cherubim that encompassed the ark of the testimony. This opinion I willingly adopt, though I do not venture to make any assertion where Scripture is silent. As it is customary with the sacred writers to accommodate their descriptions of God to those outward signs which were commonly used and familiarly known among the godly, it is possible that the Prophet saw a representation of this kind. While I hold this to be a probable conjecture, I leave room for other interpretations which some may be disposed to prefer; for Daniel saw not two angels only, but thousands of thousands of angels. (Daniel 7:10.)

Each one had six wings. This representation is instructive; for those wings thus arranged contained some mystery which it was the will of the Lord should not remain wholly unknown. The two wings with which the angels fly mean nothing else than their ready and cheerful performance of the commandments of God. On this point the resemblance is so clear and manifest, that it will be at once admitted by all who do not take delight in controversy. The two wings with which they cover their face show plainly enough that even angels cannot endure God’s brightness, and that they are dazzled by it in the same manner as when we attempt to gaze upon the radiance of the sun. And if angels are overwhelmed by the majesty of God, how great will be the rashness of men if they venture to intrude so far! Let us, therefore, learn that our inquiries concerning God ought never to go beyond what is proper and lawful, that our knowledge may soberly and modestly taste what is far above our capacity. And yet the angels do not cover their face in such a manner as not to be favored with beholding God in some degree; for their flight is not at random. In like manner we too ought to look at God, but only so far as our capacity shall enable us.

As to the remaining two wings, which were placed lower, the difficulty is somewhat greater. Some think that the angels covered their feet, that they might not touch the earth, and contract any defilement from it, as human beings like ourselves are wont to do; for in walking we gather filth and dust, and accordingly, so long as we dwell on earth, we are always tainted by some kind of contagion. This reminds believers that they will have no intercourse with angels till they raise themselves high, and are no longer fastened to the earth.

Such is the interpretation given by some expositors. But I rather agree with those who think that the use of those wings was opposite to that of the upper wings; for, as by the upper wings they cover their face, that they may not be overpowered by God’s brightness, so they have also lower wings to conceal them from our view. Now, if it be true that we cannot behold the small and feeble rays of the Divine brightness without being altogether overpowered, how could we gaze upon that unspeakably bright and glorious majesty which lays prostrate all our faculties? Let men learn, therefore, that they are far distant from a perfect knowledge of God, since they cannot even reach to the angels. The latter appears to me to be the more correct exposition, but I do not disapprove of the former.

3. And they cried one to another. It was necessary that all these things should be presented to the Prophet in vision, in order to produce a stronger impression on the people, and on Isaiah himself; for the vision was not less necessary to him than to the whole nation, because sharp and painful struggles awaited him, and he could not have boldly announced those events if he had not been previously confirmed. The people also, being warned by this vision how great and how dreadful was the majesty of God, by whom this condemnation was pronounced, had good reason for being alarmed. He who now came forth to public view is God, at the sight of whom the very angels tremble, whose praises they continually and loudly utter, and whom, in a word, they serve and obey; but men, whom he had been pleased to adopt as his children, obstinately and rebelliously opposed him.

Now, when we are informed that the angels are employed in uttering the glory of God, let us know that their example is set before us for imitation; for the most holy service that we can render to him is, to be employed in praising his name. When he associates us with angels, it is in order that, while we sojourn on earth, we may resemble and be joined to the inhabitants of heaven. That the harmony between us and the angels may be in every respect complete, we must take care not only that the praises of God may be sounded by our tongues, but likewise that all the actions of our life may correspond to our professions; and this will only be done if the chief aim of our actions be the glory of God.

Holy, holy, holy, is Jehovah of hosts. The ancients quoted this passage when they wished to prove that there are three persons in one essence of the Godhead. I do not disagree with their opinion; but if I had to contend with heretics, I would rather choose to employ stronger proofs; for they become more obstinate, and assume an air of triumph, when inconclusive arguments are brought against them; and they might easily and readily maintain that, in this passage, as in other parts of Scripture, the number “three” denotes perfection. Although, therefore, I have no doubt that the angels here describe One God in Three Persons, (and, indeed, it is impossible to praise God without also uttering the praises of the Father, of the Son, and of the Spirit,) yet I think that it would be better to employ more conclusive passages, lest, in proving an article of our faith, we should expose ourselves to the scorn of heretics. And, indeed, this repetition rather points out unwearied perseverance, as if the Prophet had said, that the angels never cease from their melody in singing the praises of God, as the holiness of God supplies us with inexhaustible reasons for them.

The whole earth is full of his glory. Literally it is, the fullness of the whole earth, which might be understood to refer to the fruits, and animals, and manifold riches with which God has enriched the earth, and might convey this meaning, that in the ornaments and great variety of furniture of the world the glory of God shines, because they are so many proofs of a father’s love. But the more simple and natural interpretation is, that the glory of God fills the whole world, or is spread through every region of the earth. There is also, I think, an implied contrast, by which he puts down the foolish boasting of the Jews, who thought that the glory of God was nowhere to be seen but among themselves, and wished to have it shut up within their own temple. But Isaiah shows that it is so far from being confined to so narrow limits, that it fills the whole earth. And to this agrees the prophecy which immediately follows, (verse 10,) about the blinding of the Jews, which opened up for the Gentiles admission into the Church of God; for they occupied that place which the Jews had forsaken and left empty.

4. And the lintels of the posts were moved. This noise was an indication that it was not a human voice which the Prophet had heard; for no mortal man has a voice so powerful as to be capable of making the lintels and posts shake. Now, the Lord intended not only to establish the authority of his voice over the Prophet, but to confirm it to posterity in all ages, that it might never be forgotten. Let us, therefore, know that this noise confirms at this day the voice of God, that we may tremble whenever he speaks; for if inanimate and dumb creatures are moved, what ought we to do, who feel, smell, taste, and understand, for no other purpose than that we may obey his word in a holy and reverent manner?

And the house was filled with smoke. This was the common and ordinary sign which the Lord employed with his ancient people; for we read that, whenever Moses entered into the tabernacle, smoke was wont to be diffused through it in such a manner that the people could not see either Moses or the tabernacle. (Exodus 33:9.) The smoke, therefore, which Isaiah describes was not an unusual occurrence; but in the ordinary way God intended to demonstrate that he would display his power in executing judgment on the people.

But it may be asked, Why did God manifest his presence by this sign rather than by any other? This question may be answered in two ways. First, it was always the will of God to repress the insolence of men, in pushing their inquiries about his majesty beyond what is proper; for on this point almost all men are too rash and daring. They wish to rise above the clouds, and to penetrate into the secrets of God, while they do not see what lies at their feet. Hence arises a labyrinth of errors, and when the minds of men have been entangled in it, they adopt false and pretended modes of worship; for when men allow themselves to adopt any false notions about God, there is nothing which they will not venture to attempt against him. It was not without good reason, therefore, that he made use of smoke, in order to remind men of their weakness; and yet he did not intend that they should be blind or stupid, that is, that they should have the stupidity and error which the papists disguise under the name of simplicity; but he forbids us to inquire or search beyond what he has revealed to us in his word; for, as Augustine says, “that is a learned ignorance.” Whenever, therefore, smoke of this kind is mentioned, let us know that it lays a restraint upon us from indulging curiosity in our researches into the purpose of God.

Secondly, this smoke ought to strike terror, as David, when describing an angry and terrible God, says that clouds and darkness are round about him. (Psalm 97:2.) This also agrees well with the present passage; for he pronounces a dreadful judgment, namely, the blinding of the Jews. Others think that it indicated the burning by which he consumed the temple; but the view which I have given is more probable.

5. Wo to me! for I am undone. The Prophet now relates how powerfully he was affected by that vision; namely that he was so terrified by seeing God; that he expected immediate destruction. He assigns the reason for believing that it is all over with him; because, says he, I am a man of unclean lips

I wonder why Jerome renders it, because I was silent; seeing that there is no ambiguity in the expression. דמה (damah) does indeed signify to be silent, but here the undoubted mark of a passive verb is added. This passage may likewise be rendered, Wo to me! for I have been reduced to silence. In the Scriptures silence is often taken for death and those who have been buried are said to have been reduced to silence. But as the meaning is the same, I will not dispute much about the translation.

The Prophet therefore means, that he was so terrified as to resemble a dead man. And certainly we need not wonder at this; for the whole man, so far as relates to the flesh, must be reduced to nothing, that it may be renewed according to God. Whence comes it that men live, that is, imagine that they live, and are swelled with vain confidence in their wisdom or strength, but because they know not God? Accordingly, until God reveal himself to us, we do not think that we are men, or rather, we think that we are gods; but when we have seen God, we then begin to feel and know what we are. Hence springs true humility, which consists in this, that a man makes no claims for himself, and depends wholly on God; and therefore on this point the present and similar passages ought to be carefully studied.

It was customary with the godly fathers, whenever they saw God, to break out into these words:

I am gone; I am utterly undone. (Judges 13:22.)

Our life, therefore, until our minds earnestly draw near to God, is a vain delusion; we walk in darkness, and can with difficulty distinguish truth from falsehood; but when we come into the light it is easy to perceive the difference. So when God draws near to us, he brings light with him, that we may perceive our worthlessness, which we could not formerly see, while we entertained a false opinion of ourselves.

And yet mine eyes have seen the king, Jehovah of hosts. ⁹³⁹³     For mine eyes have seen the king, the LORD of hosts. — Eng. Ver. But does the sight of God bring death to men? For it appears strange that the sight of God or approach to him should take away life, of which he is the source and giver. I reply that this is an accidental result; for it takes place through our fault, and not on account of the nature of God. Death is within us; but we do not perceive it, unless when it is compared with the life of God. This is unquestionably what the Prophet means; for he does not merely say that he is dead, but assigns the reason, because he has unclean lips.

But why does he confine the pollution to the lips? Was he pure in understanding, or in the other parts of the body? I answer: the Prophet mentions that which he regarded as the most valuable, his tongue, which was consecrated to God; for God had appointed him to be a Prophet. Even though he was in other respects a sinner, yet because the office which he held was holy, this part of his body was sacred; and as it does not correspond to the divine holiness, he confesses that, even in that part which in itself is more holy, he is polluted. Such appears to me to be the true and natural meaning of this passage, in the explanation of which commentators have hitherto been unsuccessful.

And I dwell in the midst of a people of unclean lips. This is added by way of explanation; for he includes himself as an individual in the number of the common people, tainted with that pollution which extends to the whole body, and forgets the purity which he had received from God, because it cannot dwell in his presence. Hence it is evident that they are mistaken who imagine that the Prophet spoke under erroneous views; as the common people are wont to contrive a variety of false notions concerning God. For, as I have said, the presence of God and approach to him is the destruction of our flesh; because it shows that we are nothing in ourselves. When he who is conscious of his wretchedness sees God, what can he expect but destruction? For God is our judge, to whom, we know, nothing is concealed or unknown, in whose sight our purity is impure. And if this happened to the Prophet, what ought we to think of ourselves? For what are we in comparison of him? Even if the LORD hath begun to cleanse us, yet we ought to acknowledge our pollution, the remains of which always continue in our flesh. Hence also we ought to draw a universal doctrine, that the lips of all men are impure and polluted, till the Lord has cleansed them; from which it also follows, that human doctrines have an uncleanness which betrays them, and that there is nothing pure but what has come from God.

6. Then flew one of the seraphim to me. The Prophet shows what kind of relief was brought to him, when he was so terrified as to think that he was a dead man; and this confirms what we have already said, that purity of lips comes from God alone; for men can produce nothing of themselves but what is filthy and abominable. If it be objected that it is absurd to say that the Lord now cleansed him, as if his tongue had formerly been impure and profane, though it had been the instrument employed by the Holy Spirit, I have already replied sufficiently to that objection. The Lord had already cleansed him, but according to his degree. The cleansing which is now added is greater; for it has its enlargements and additions, which no man can obtain all at once.

We must not conclude, therefore, that Isaiah’s lips were impure, because they are now cleansed; but we ought to inquire why it is done. It was because the Lord intended to enlarge and extend his favor towards him, and to raise him to higher dignity, that he might have greater influence over the people; and this was rendered necessary by the character of the times, and the change which had taken place in the state.

The fire was taken from the altar, to intimate that it was divine or heavenly; for the law forbade any strange fire to be brought to it, (Leviticus 10:1,) because in sacred things every human mixture is absolute profanation. By this figure, therefore, Isaiah was taught that all purity flows from God alone.

7. And applying it to my mouth. ⁹⁴⁹⁴     And he laid it upon (marg., caused it to touch) my mouth. — Eng. Ver. We see how God condescends to meet the weakness of human sense. He puts the tongs into the hand of a seraph, that by means of it he may take a coal from the altar and apply it to the Prophet’s mouth. This was, no doubt, done in vision; but by the aid of the outward sign God assisted the Prophet’s understanding. There is no reason to believe that the coal possessed any virtue, as superstitious persons imagine that in the magical arts there is some hidden power. Nothing of this sort is to be found here; for it is God alone who can cleanse our pollution, in whatever part it exists.

Here the angel administered the cleansing, but was not the author of it; so that we must not ascribe to another what belongs to God alone. This is expressly stated by the angel himself, who claims nothing as his own, but bringing forward the sacred pledge which he had received from God, laid it as a sacrament on the lips of the Prophet; not that he could not be cleansed without the coal, but because the visible sign was useful for the confirmation and proof of the fact. And such is the use of sacraments, to strengthen us in proportion to our ignorance; for we are not angels, that can behold the mysteries of God without any assistance, and therefore he raises us to himself by gradual advances.

Lo, this hath touched thy lips. He shows that the confirmation which was obtained by the sign was not without effect, but that the blessing signified by it was at the same time bestowed, so that Isaiah knew that he had not been deceived. Hence we may infer, that in the sacraments the reality is given to us along with the sign; for when the Lord holds out a sacrament, he does not feed our eyes with an empty and unmeaning figure, but joins the truth with it, so as to testify that by means of them he acts upon us efficaciously. And this ought to be the more carefully observed, because there are few persons in the present day who understand the true use of sacraments, and because many godly and learned men are engaged in frequent disputes respecting them.

First of all, we ought to believe that the truth must never be separated from the signs, though it ought to be distinguished from them. We perceive and feel a sign, such as the bread which is put into our hands by the minister in the Lord’s Supper; and because we ought to seek Christ in heaven, our thoughts ought to be carried thither. By the hand of the minister he presents to us his body, that it may be actually enjoyed by the godly, who rise by faith to fellowship with him. He bestows it, therefore, on the godly, who raise their thoughts to him by faith; for he cannot deceive.

Unbelievers indeed receive the sign; but because they linger in the world, and do not arrive at Christ’s heavenly kingdom, they have no experience of the truth; for he who has not faith cannot raise his thoughts to God, and therefore cannot partake of Christ. Faith alone opens for us the gate of the kingdom of God; and therefore, whoever wishes to eat the flesh of Christ must be carried by faith to heaven beyond human conception. In short, it is the Spirit of God alone who can make us partakers of that fellowship. And yet it does not follow that the unbelief of men takes anything away from the truth of the sacrament, since God always presents to us a spiritual matter, but wicked men treat it with scorn; just as the grace of God is offered by the gospel, but all do not receive it, though they actually hear it, and are compelled to yield assent to the truth.

Besides, we learn from this passage that the sacraments are never separated from the word. The angel does not here act the part of a dumb man, but, after having given the sign, immediately adds the doctrine, in order to show what was intended by it; for it would have been no sacrament, if doctrine had not been added, from which Isaiah could learn for what purpose the coal was applied to his mouth. Let us therefore learn that the chief part of the sacraments consists in the word, and that without it they are absolute corruptions, such as we see every day in popery, in which the sacraments are turned into stage-plays. The amount of the whole is, that there is nothing to prevent Isaiah, who has been perfectly cleansed, and is free from all pollution, from appearing as God’s representative.

8. Afterwards I heard the voice of the Lord. The Prophet now begins to discourse about the design of this vision, why God appeared to him with such glorious majesty, in order to ordain him anew as a prophet. It was because he was called to deliver an incredible message about blinding the Jews. On this revolting occasion, therefore, he is more fully assured of his calling, that he may lay aside fear and obey the command of God; for nothing gives greater confidence to pious minds than to know that they obey God. He had also another proof, namely, that the Lord had cleansed him; and this was sufficient to lead him to undertake any task, however difficult.

Whom shall I send? The Prophet represents the Lord as speaking, as if he could not find a man qualified for such a message. Some think that this is intended to reprove the ignorance of the priests and prophets; because, though they are very numerous, still not one of them was qualified to teach. This reason carries some probability, but I would rather view it as referring to the certainty of Isaiah’s calling, as implying that it was not at random, but from choice, that the Lord appointed him. There is here, therefore, a weighty deliberation whom the Lord will be pleased to send; not that he hesitates, but such modes of expression are used on our account, just as these words, I will go down and see. (Genesis 18:21.) For God, to whom all things are known, has no need to make any inquiry; but, lest men should think that he acts with precipitation, he thus accommodates himself to the ordinary modes of speaking among men. In like manner, when he asks whom he shall send, the meaning is, that he needs not an ordinary person, but a teacher of uncommon excellence on a subject of the greatest importance. Hence we infer that the authority of Isaiah was confirmed, so that he was reckoned to be not only a prophet, but eminent among the prophets.

Who will go for us? I am rather favorable to the opinion that this passage points to Three Persons in the Godhead, just as we elsewhere read,

Let us create man in our likeness. (Genesis 1:26.)

For God talks with himself, and in the plural number; and unquestionably he now holds a consultation with his eternal Wisdom and his eternal Power, that is, with the Son and the Holy Spirit.

Here am I. So ready a reply shows how great is that cheerfulness which springs from faith; for he who but lately lay like a dead man dreads no difficulty. Hence we see that the amazement of which we have formerly spoken did not spring from rebellion, in wishing to flee from God, or to refuse the charge which had been laid upon him; but because he needed new grace, that he might know that he would be able to endure the burden. On this account it ought to be observed, that we cannot undertake anything in a proper manner without the evidence of our calling; otherwise we shall pause and hesitate at every step.

Besides, it is a powerful aid to our confidence, when we know that we are not destitute of the necessary gifts, but that God has bestowed them on us, in order that we may be better enabled to discharge our office. Now, this remarkable instance of obedience ought to produce such an effect on our minds that we shall readily and cheerfully undertake any task which he may be pleased to enjoin, and shall never refuse any task, however difficult we may imagine it to be. When the Prophet says, Here am I, the meaning is, that he is ready to obey the commands of God; for this mode of expression is frequently employed in Scripture to denote obedience.

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