Genesis 17:12
And he that is eight days old shall be circumcised among you, every man child in your generations, he that is born in the house, or bought with money of any stranger, which is not of thy seed.
More from Genesis 17
Verse 1
And when Abram was ninety years old and nine, the LORD appeared to Abram, and said unto him, I am the Almighty God; walk before me, and be thou perfect.
Verse 2
And I will make my covenant between me and thee, and will multiply thee exceedingly.
Verse 3
And Abram fell on his face: and God talked with him, saying,
Verse 4
As for me, behold, my covenant is with thee, and thou shalt be a father of many nations.
Verse 5
Neither shall thy name any more be called Abram, but thy name shall be Abraham; for a father of many nations have I made thee.