1 Corinthians 7:17-18

May all believers continue to live the wonderful lives God has called them to live, according to what he assigns for each person, for this is what I teach to believers everywhere. If when you were called to follow Jesus you were circumcised, it would be futile to try to undo the circumcision. And if you were called while yet uncircumcised, there is no need to be circumcised.