1 Corinthians 7:19

19ἡCircumcisionπεριτομὴnothingοὐδένisἐστιν,andκαὶἡuncircumcisionἀκροβυστίαnothingοὐδένisἐστιν,butἀλλὰkeepingτήρησις[the] commandmentsἐντολῶνof Godθεοῦ.

Circumcision is nothing and uncircumcision is nothing, but keeping of the commandments of God.