Contradiction with Matthew 5:44
While Psalms 40:14 calls for enemies to be shamed, Matthew 5:44 teaches to love and pray for one's enemies, promoting forgiveness instead of seeking their downfall.
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 12:20
Contrasting Psalms 40:14's call for the disgrace of foes, Romans 12:20 encourages kindness to enemies, suggesting that by doing so you will "heap coals of fire on his head," implying a transformative act of love rather than disgrace.
Romans 12:20: Therefore if thine enemy hunger, feed him; if he thirst, give him drink: for in so doing thou shalt heap coals of fire on his head.
Contradiction with Proverbs 25:21
Proverbs 25:21 advises feeding and giving drink to your enemy, contradicting the desire for their shame and dishonor as suggested in Psalms 40:14.
Proverbs 25:21: If thine enemy be hungry, give him bread to eat; and if he be thirsty, give him water to drink: