nothing. Greek. oudeis. Compare Galatians 1:5; Galatians 1:6; Galatians 6:15.
keeping. guarding. Greek. teresis. This is the Figure of speech Ellipsis (App-6). Supply "is every thing", or "is alone important".
Related Commentaries of 1 Corinthians 7:19
1 Corinthians 7:19
19 Circumcision is nothing, and uncircumcision is nothing, but the keeping of the commandments of God.