New Living Translation
For instance, a man who was circumcised before he became a believer should not try to reverse it. And the man who was uncircumcised when he became a believer should not be circumcised now.

American Standard Version
Was any man called being circumcised? Let him not become uncircumcised. Hath any been called in uncircumcision? Let him not be circumcised.

Berean Study Bible
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.

Douay-Rheims Bible
Is any man called, being circumcised ? let him not procure uncircumcision. Is any man called in uncircumcision ? let him not be circumcised.

English Revised Version
Was any man called being circumcised? let him not become uncircumcised. Hath any been called in uncircumcision? let him not be circumcised.

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

World English Bible
Was anyone called having been circumcised? Let him not become uncircumcised. Has anyone been called in uncircumcision? Let him not be circumcised.

Young's Literal Translation
being circumcised -- was any one called? let him not become uncircumcised; in uncircumcision was any one called? let him not be circumcised;

1 Corinthians 7:18 Additional Translations ...