And Sarai said to Aḇram, “See, יהוה has kept me from bearing children. Please, go in to my female servant. It might be that I am built up by her.” And Aḇram listened to the voice of Sarai.
“He who is born in your house, and he who is bought with your silver, has to be circumcised. So shall My covenant be in your flesh, for an everlasting covenant.