1 Corinthians 9:21 (ESV)

21 To those outside the law I became as one outside the law (not being outside the law of God but under the law of Christ) that I might win those outside the law.

Among unbelieving Gentiles, Paul lived as one “outside the law.” This does not mean, however, that he lived “outside the law of God.” He is outside the ceremonial law, but “under the law of Christ.”