So he put him aside, and commanded to bring the other, and said to him, O you seed of Chanaan, and not of Juda, beauty has deceived you, and lust has perverted your heart.
Read Chapter 13
Hilary of Poitiers
AD 368
Salvation was awaited by and offered to Israel but not to the carnal Israel. “In fact, it is not the children of the flesh who are the children of God, but the children of the promise who are considered his offspring.” As John also attests, the children of Abraham are not the children according to the flesh, since they are also children of vipers, and God can raise up children of Abraham from rocks. The Lord taught that the right of succession is constituted by works of faith and that we must not think of the birth of children according to carnal generation, when he says, “If you were children of Abraham, you would do the works that Abraham did.” And Daniel also, condemning the old men, does not say, “offspring of Abraham,” but, “offspring of Canaan and not of Judah.” Ezekiel also, confronting the people with their iniquities, says, “Your father was a Canaanite, your mother a Hittite. Your origin and your birth are of the land of Canaan.” We are not dealing, therefore, with this Israel...
Ham receives the sentence so that he might come to his senses, and he is punished through his son, so that you would learn that even if one is old, the punishment will pass to the child. And this makes his life bitter and painful, knowing that even after his death his son will be punished for what he did. And that the son will be miserable from birth and all his descendants detestable and inclined to evil is what the Scripture says instead of pronouncing a curse: “Your father was an Amorite and your mother a Hittite.” And elsewhere it says scornfully, “offspring of Canaan and not of Judah.” - "Homilies on Genesis 29.7"