Jamieson, Fausset and Brown on Psalms 109:1

PSALM 109

Psa 109:1-31. The writer complains of his virulent enemies, on whom he imprecates God's righteous punishment, and to a prayer for a divine interposition in his behalf appends the expression of his confidence and a promise of his praises. This Psalm is remarkable for the number and severity of its imprecations. Its evident typical character (compare Psa 109:8) justifies the explanation of these already given, that as the language of David respecting his own enemies, or those of Christ, it has respect not to the penitent, but to the impenitent and implacable foes of good men, and of God and His cause, whose inevitable fate is thus indicated by inspired authority.

1. God of my praise--its object, thus recognizing God as a certain helper. Be not silent (compare Psa 17:13; 28:1).