Alef-BeisBy Rabbi Jack Abramowitz
David starts this Psalm by saying “praise G-d,” then he proceeds to deliver the rest in the form of an alphabetic acrostic, two or three letters per line:
Alef: I will thank G-d with my whole heart Beis: in the company of upright people
Gimel: Great are G-d’s deeds, Daled: accessible to all who desire them.
Hey: Glory and splendor are His works Vav: and His righteousness lasts forever.
Zayin: A memorial He established for His wonders; Ches: Gracious and merciful is G-d.
Tes: Food He gives to His faithful; Yud: He will always remember His covenant.
Kaf: The might of His deeds He told His people Lamed: to give them an inheritance of nations.
Mem: The work of His hands is truth and justice Nun: faithful are all of His commands.
Samech: Firmly established forever, Ayin: made in truth and fairness.
Pey: Redemption He sent to His people, Tzadi: He commanded His covenant eternally; Kuf: Holy and awe-inspiring is His Name.
Resh: The beginning of wisdom is to be in awe of G-d Sin: Good sense for all who do this. Tav: His praise lasts forever!
Basically, this Psalm is about Torah and those who study it. The last verse is familiar as Reishis Chochma, the prayer recited daily after Modeh Ani.