Contradiction with Matthew 5:44
This verse instructs to love your enemies and pray for those who persecute you, whereas Psalms 109:1 leads into a plea for divine justice against adversaries.
Matthew 5:44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
Contradiction with Romans 12:14
It exhorts to bless those who persecute you, which contradicts engaging in curses present in Psalms 109.
Romans 12:14: Bless them which persecute you: bless, and curse not.
Contradiction with Proverbs 25:21
Advises feeding your enemy when he is hungry, contrary to invoking vengeance upon them as in Psalms 109.
Proverbs 25:21: If thine enemy be hungry, give him bread to eat; and if he be thirsty, give him water to drink:
Contradiction with Luke 6:27-28
Commands love for enemies and doing good to those who hate you, differing from the theme of seeking retribution.
Luke 6:27-28: But I say unto you which hear, Love your enemies, do good to them which hate you,
Contradiction with 1 Peter 3:9
Advises not to repay evil for evil, but to offer blessings instead, standing in contrast to the tone of retribution in Psalms 109.
1 Peter 3:9: Not rendering evil for evil, or railing for railing: but contrariwise blessing; knowing that ye are thereunto called, that ye should inherit a blessing.