Psalm 37 is an Acrostic Psalm (see App-63), having four lines (a quatrain) assigned to each successive letter of the alphabet, except the fourth (Psa_37:7), the eleventh (Psa_37:20), the nineteenth (Psa_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 (Psa_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.