Ps 4:1
4:1 <<{a} To the chief Musician on Neginoth, A Psalm of David.>>
    Hear me when I call, {b} O God of my righteousness: thou
    hast enlarged me [when I was] in {c} distress; have mercy
    upon me, and hear my prayer.

    (a) Among those who were appointed to sing the psalms and to
        play on instruments, one was appointed chief to set the
        tune, and to begin: who had the charge because he was
        most excellent and he began this psalm on the instrument
        called Neginoth or in a tune so called.
    (b) You who are the defender of my just cause.
    (c) Both of mind and body.

Ps 4:2
4:2 O ye {d} sons of men, how long [will ye turn] my glory into
    shame?  [how long] will ye {e} love vanity, [and] seek after
    leasing? Selah.

    (d) You who think yourselves noble in this world.
    (e) Though your enterprises please you, yet God will bring
        them to nothing.

Ps 4:3
4:3 But know that the LORD hath set apart him that is {f} godly
    for himself: the LORD will hear when I call unto him.

    (f) A king who walks in his vocation.

Ps 4:4
4:4 {g} Stand in awe, and sin not: commune with your own heart
    upon your bed, and be {h} still. Selah.

    (g) For fear of God's judgment.
    (h) Cease your rage.

Ps 4:5
4:5 {i} Offer the sacrifices of righteousness, and put your
    trust in the LORD.

    (i) Serve God purely, and not with outward ceremonies.

Ps 4:6
4:6 [There be] many that say, Who will shew us [any] {k} good?
    LORD, lift thou up the light of thy countenance upon us.

    (k) The multitude seeks worldly wealth, but David sets his
        happiness in God's favour.

Ps 4:8
4:8 I will both lay me down in peace, and sleep: for thou, LORD,
    {l} only makest me dwell in safety.

    (l) This word in Hebrew may be referred to God, as it is
        here translated, or to David, signifying that he should
        dwell as joyfully alone, as if he had many about him,
        because the Lord is with him.