Galatians 2:15-16

15We, Jews by nature, and not sinners of [the] nations,

16but knowing that a man is not justified on the principle of works of law [nor] 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.