Genesis 17:10

10This is my covenant, which you shall keep, between me and you and your offspring after you: Every male among you shall be circumcised.

Romans 4:11

11 aHe received the sign of circumcision as a seal of the righteousness that he had by faith while he was still uncircumcised. The purpose was bto make him the father of all who believe without being circumcised, so that righteousness would be counted to them as well,
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