Acts 15:27

Then it seemed good to the apostles and the elders, with the whole church, to choose men from among them—Judas called Barsabbas, and Silas, leading men among the brothers—to send to Antioch with Paul and Barnabas,

And both Judas and Silas, also being prophets themselves, encouraged and strengthened the brothers with a lengthy message.

and they have been told about you, that you are teaching all the Jews who are among the Gentiles to forsake Moses, telling them not to circumcise their children nor to walk according to the customs.

Was any man called when he was already circumcised? He is not to become uncircumcised. Has anyone been called in uncircumcision? He is not to be circumcised.