Charles H. Spurgeon on Psalms 109:7

Let his prayer become sin. We should be watchful in prayer lest the most holy worship of God should become an abomination: Isa 1:15 66:3 Jas 4:3 Ho 7:14 Am 5:23. If the remedy be poisoned, how shall the diseased be cured? —Martin Geier.

Verses 7-19. These and the following verses, although they contain terrible imprecations, will become less dreadful if we understand them as spoken concerning men pertinaciously cleaving to their vices, against whom only has God threatened punishments; not against those who repent with all their heart, and become thoroughly changed in life. —John Le Clerc.