Psalms 37 is an Acrostic Psalm (see App-63), having four lines (a quatrain) assigned to each successive letter of the alphabet, except the fourth (Psalms 37:7), the eleventh (Psalms 37:20), the nineteenth (Psalms 37:34), which each have three lines (a triplet) assigned to them. These three triplet verses occur in perfect order. The seventh verse is the seventh letter from the beginning; the thirty-fourth verse is the seventh letter from the end; while the middle verse (Psalms 37:20) marks the end of the first half with the first of the two middle letters.
Title, of David. by David, and relating to the true David. The Psalm is Messiah's admonition as to present blessing, arising from the fact that Jehovah is His Shepherd.
Fret not. Heat not thyself with vexation.
evildoers. Compare Psalms 36:11; Psalms 36:12. Hebrew ra'a'. App-44. Hebrew 'aval. App-44