Contradiction with Matthew 5:44
While Psalms 109:29 speaks about adversaries being clothed with shame, Matthew 5:44 advises loving enemies and praying for those who persecute you.
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 Luke 6:27-28
Psalms 109:29 calls for adversaries' shame, whereas Luke 6:27-28 encourages doing good to those who hate and bless those who curse.
Luke 6:27-28: But I say unto you which hear, Love your enemies, do good to them which hate you,
Contradiction with Romans 12:14
Psalms 109:29 implies seeking retribution for adversaries, but Romans 12:14 tells to bless those who persecute you and not curse them.
Romans 12:14: Bless them which persecute you: bless, and curse not.
Contradiction with Proverbs 25:21-22
Psalms 109:29 involves adversaries' disgrace; Proverbs 25:21-22 advocates feeding your enemy and giving them water, thus showing kindness rather than seeking their shame.
Proverbs 25:21-22: If thine enemy be hungry, give him bread to eat; and if he be thirsty, give him water to drink:
Contradiction with 1 Peter 3:9
Contrary to Psalms 109:29's implication of wishing shame upon adversaries, 1 Peter 3:9 instructs not to repay evil with evil or insult with insult but with blessing.
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.