Acts 15:1-29
And certain men which came down from Judaea taught the brothers, and said, Except you be circumcised after the manner of Moses, you cannot be saved.
Torrey's Topical Textbook—AKJV

Romans 3:28
Therefore we conclude that a man is justified by faith without the deeds of the law.
Torrey's Topical Textbook—AKJV

Romans 11:6
And if by grace, then is it no more of works: otherwise grace is no more grace. But if it be of works, then it is no more grace: otherwise work is no more work.
Torrey's Topical Textbook—AKJV

Galatians 2:14-21
But when I saw that they walked not uprightly according to the truth of the gospel, I said to Peter before them all, If you, being a Jew, live after the manner of Gentiles, and not as do the Jews, why compel you the Gentiles to live as do the Jews?
Torrey's Topical Textbook—AKJV

Galatians 5:4
Christ is become of no effect to you, whoever of you are justified by the law; you are fallen from grace.
Torrey's Topical Textbook—AKJV