Genesis 17:13-15

Darby Translation

¹³ He who is born in thy house, and he who is bought with thy money, must be circumcised; and my covenant shall be in your flesh for an everlasting covenant.

¹⁴ And the uncircumcised male who hath not been circumcised in the flesh of his foreskin, that soul shall be cut off from his peoples: he hath broken my covenant.

¹⁵ And God said to Abraham, [As to] Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall be her name.