Contradiction with Proverbs 24:17-18
These verses advise against rejoicing when enemies fall, whereas Psalms 9:4 speaks of God maintaining justice by subduing adversaries.
Proverbs 24:17-18: Rejoice not when thine enemy falleth, and let not thine heart be glad when he stumbleth:
Contradiction with Matthew 5:44
Matthew speaks of loving and praying for enemies, which contrasts with the idea of God defeating them in Psalms 9:4.
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
Encourages feeding and giving drink to enemies, which contradicts the notion of their defeat or judgment implied in Psalms 9:4.
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 Ezekiel 33:11
God expresses no pleasure in the death of the wicked, differing from the triumph over enemies depicted in Psalms 9:4.
Ezekiel 33:11: Say unto them, [As] I live, saith the Lord GOD, I have no pleasure in the death of the wicked; but that the wicked turn from his way and live: turn ye, turn ye from your evil ways; for why will ye die, O house of Israel?
Contradiction with Luke 6:27
Advises loving enemies, which contrasts with the concept of enemies being subdued as seen in Psalms 9:4.
Luke 6:27: But I say unto you which hear, Love your enemies, do good to them which hate you,