Genesis 17:22

And as soon as He had finished speaking to Abraham, Yahweh departed, and Abraham returned to his place.

Then God went up from him in the place where He had spoken with him.

So the anger of Yahweh burned against them, and He went away.

“For this reason Moses has given you circumcision (not because it is from Moses, but from the fathers), and on the Sabbath you circumcise a man.

“And He gave him the covenant of circumcision; and so Abraham was the father of Isaac, and circumcised him on the eighth day; and Isaac was the father of Jacob, and Jacob of the twelve patriarchs.

But the son by the servant-woman had been born according to the flesh, while the son by the free woman through the promise.