1 Corinthians 7:17-20

Only let each person lead the life that the Lord has assigned to him, and to which God has called him. This is my rule in all the churches. Was anyone at the time of his call already circumcised? Let him not seek to remove the marks of circumcision. Was anyone at the time of his call uncircumcised? Let him not seek circumcision. For neither circumcision counts for anything nor uncircumcision, but keeping the commandments of God. Each one should remain in the condition in which he was called.