1Th 3:3
3:3 That no man should be moved by these afflictions: {1} for
    yourselves know that we are appointed thereunto.

 (1) The will of God, who calls his own on this condition, to
     bring them to glory by affliction, is a most sure remedy
     against all afflictions.

1Th 3:6
3:6 {2} But now when Timotheus came from you unto us, and
    brought us good tidings of your faith and charity, and that
    ye have good remembrance of us always, desiring greatly to
    see us, as we also [to see] you:

 (2) Because they have to this point gone so well forward, he
     exhorts them again to make an end of the rest of the
     journey, seeing that in doing so they will do him their
     apostle a great pleasure.

1Th 3:8
3:8 For now we {a} live, if ye stand fast in the Lord.

    (a) For now you cannot otherwise think of me as at rest and
        in a good state of being, unless you go forward in
        religion and faith.

1Th 3:10
3:10 Night and day praying exceedingly that we might see your
     face, and might {b} perfect that which is lacking in your
     faith?

     (b) Paul was forced through the pressing dealing of the
         enemies to leave the building which he had just begun:
         and for that reason he had left Silas and Timothy in
         Macedonia, and when Timothy came to Athens to him, he
         sent him back again immediately.  So that he desires to
         see the Thessalonians, that he may thoroughly perfect
         their faith and religion, that was as yet imperfect.

1Th 3:12
3:12 {3} And the Lord make you to increase and abound in love
     one toward another, and toward all [men], even as we [do]
     toward you:

 (3) Another part of the epistle, in which he speaks of the
     duties of a Christian life.  And he shows that the
     perfection of a Christian life consists in two things, that
     is, in charity toward all men, and inward purity of the
     heart.  And the accomplishment of these things is
     nonetheless deferred to the next coming of Christ, who will
     then perfect his work by the same grace with which he began
     it in us.