NET

16 yet we know that no one is justified by the works of the law but by the faithfulness of Jesus Christ. And we have come to believe in Christ Jesus, so that we may be justified by the faithfulness of Christ and not by the works of the law, because by the works of the law no one will be justified.

Darby

16 but knowing that a man is not justified on the principle of works of law [nor]^D8540 but by the faith of Jesus Christ, *we* also have believed on Christ Jesus, that we might be justified on the principle of [the] faith of Christ; and not of works of law; because on the principle of works of law no flesh shall be justified.

Darby Bible Notes

[nor] - The Greek has the sense of 'but,' with an exclusive force, which I have endeavoured to render by 'nor' in brackets. see Rom. 7.7; 14.14; 1Cor. 7.17; Gal. 1.7. We may translate perhaps, 'but only.'

KJV

16 Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ, that we might be justified by the faith of Christ, and not by the works of the law: for by the works of the law shall no flesh be justified.