1 Corinthians 7:18

7:18 Was anyone called after he had been circumcised? He should not try to undo his circumcision. Was anyone called who is uncircumcised? He should not get circumcised.

1 Corinthians 14:27

14:27 If someone speaks in a tongue, it should be two, or at the most three, one after the other, and someone must interpret.