Contradiction with Genesis 9:1
Genesis 9:26 condemns one of Noah's sons (Canaan), while Genesis 9:1 blesses all his sons equally.
Genesis 9:1: And God blessed Noah and his sons, and said unto them, Be fruitful, and multiply, and replenish the earth.
Contradiction with Genesis 12:3
Genesis 9:26 pronounces a curse on Canaan, Noah’s grandson, whereas Genesis 12:3 talks about God's promise of blessing to Abraham's descendants.
Genesis 12:3: And I will bless them that bless thee, and curse him that curseth thee: and in thee shall all families of the earth be blessed.
Contradiction with Matthew 5:44
Genesis 9:26 involves a curse, whereas Matthew 5:44 teaches to love your enemies and bless those who curse 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 Romans 12:14
Genesis 9:26 includes a curse, contradicting Romans 12:14 which advises to bless those who persecute you.
Romans 12:14: Bless them which persecute you: bless, and curse not.