Psalm 4 speaks of the peace and joy which is found in the Lord. The God of righteousness will hear our prayers when we call to Him in trust, He will give relief when we are in distress.

Psalm 4

Answer Me When I Call

To the choirmaster: with stringed instruments. A Psalm of David.

4:1   Answer me when I call, O God of my righteousness!
    You have given me relief when I was in distress.
    Be gracious to me and hear my prayer!
2   O men,¹ how long shall my honor be turned into shame?
    How long will you love vain words and seek after lies? Selah
3   But know that the LORD has set apart the godly for himself;
    the LORD hears when I call to him.
4   Be angry,² and do not sin;
    ponder in your own hearts on your beds, and be silent. Selah
5   Offer right sacrifices,
    and put your trust in the LORD.
6   There are many who say, “Who will show us some good?
    Lift up the light of your face upon us, O LORD!”
7   You have put more joy in my heart
    than they have when their grain and wine abound.
8   In peace I will both lie down and sleep;
    for you alone, O LORD, make me dwell in safety.

Footnotes

[1] 4:2 Or O men of rank
[2] 4:4 Or Be agitated

(ESV)