Albert Barnes Commentary Psalms 109:5

"And they have rewarded me evil for good, And hatred for my love." — Psalms 109:5 (ASV)

And they have rewarded me evil for good - literally, “They have placed against me.” They have put it in my way; it is what they had to set before me. See the notes at Psalms 35:12, where the same expression occurs.

And hatred for my love - Instead of loving me in return for my love, they have met me with the expressions of hatred. This often occurred in the life of David; it was constant in the life of the Saviour; it is habitually manifested by people toward God; it is often experienced by good men now; it “may” occur in the life of any man - and if it “does” occur to us, we should not think that any strange thing has happened to us.