Romans 4:4,5
Now to him that works is the reward not reckoned of grace, but of debt.
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 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