Was a man already circumcised when he was called? He should not become uncircumcised. Was a man still uncircumcised when called? He should not be circumcised.

Acts 15:1
Then some men came down from Judea and were teaching the brothers, "Unless you are circumcised according to the custom of Moses, you cannot be saved."

Acts 15:5
But some believers from the party of the Pharisees stood up and declared, "The Gentiles must be circumcised and required to obey the law of Moses."

Acts 21:21
But they are under the impression that you teach all the Jews who live among the Gentiles to forsake Moses, telling them not to circumcise their children or observe our customs.

Is any man called being circumcised? let him not become uncircumcised. Is any called in uncircumcision? let him not be circumcised.