David beseeches God to hear his prayer, ver. 1-3. Assures himself of God's justice against his enemies, ver. 4-6. Declares his resolution: to serve God, ver. 7. Prays for himself and the people of God, and against his enemies, ver. 8-12. To the chief musician upon Nehiloth, A psalm of David. Title of the psalm. Nehiloth - This is no where else used in scripture. It is thought to signify a wind-instrument, as Neginoth signified stringed instruments.