Genesis 17:10 KJV
This is my covenant, which ye shall keep, between me and you and thy seed after thee; Every man child among you shall be circumcised.
Genesis 17:10, King James Version
In context
9 And God said unto Abraham, Thou shalt keep my covenant therefore, thou, and thy seed after thee in their generations.
10 This is my covenant, which ye shall keep, between me and you and thy seed after thee; Every man child among you shall be circumcised.
11 And ye shall circumcise the flesh of your foreskin; and it shall be a token of the covenant betwixt me and you.