Romans 11:6

But if by grace, it is no more by works: otherwise grace is no more grace. But if by works, it is no more grace: otherwise work is no more work.

Romans 3:27-28

Where then is boasting? It is excluded. By what law? of works? No: but by the law of faith.

Romans 4:4-5

Now to him that worketh, the reward is not brought to account as a favour, but as a debt.

Romans 5:20-21

But the law was introduced, that the offence might be more abundant. But where sin had abounded, there hath grace abounded more exceedingly:

1 Corinthians 15:10

But by the grace of God I am what I am: and his grace which was given to me was not in vain; but I laboured more abundantly than they all; yet not I, but the grace of God which was with me.

Galatians 2:21

I do not set at nought the grace of God; for if righteousness came by the law, truly Christ hath died in vain.

Galatians 5:4

Ye have vacated all expectations from Christ, as many of you as are justified by the law; ye are fallen from grace.

Ephesians 2:4-9

But God, being rich in mercy, through the great love with which he hath loved us,

2 Timothy 1:9

who hath saved us, and called us with an holy calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before time had a beginning;

Titus 3:5

not for works of righteousness which we had done, but according to his mercy he saved us, by the laver of regeneration, and by renovation of the Holy Spirit;

Treasury of Scripture Knowledge

Summary

And if by grace, then is it no more of works: otherwise grace is no more grace. But if it be of works, then is it no more grace: otherwise work is no more work.

General references

Bible References

And if

Romans 3:27
Where then is boasting? It is excluded. By what law? of works? No: but by the law of faith.
Romans 4:4
Now to him that worketh, the reward is not brought to account as a favour, but as a debt.
Romans 5:20
But the law was introduced, that the offence might be more abundant. But where sin had abounded, there hath grace abounded more exceedingly:
1 Corinthians 15:10
But by the grace of God I am what I am: and his grace which was given to me was not in vain; but I laboured more abundantly than they all; yet not I, but the grace of God which was with me.
Galatians 2:21
I do not set at nought the grace of God; for if righteousness came by the law, truly Christ hath died in vain.
Galatians 5:4
Ye have vacated all expectations from Christ, as many of you as are justified by the law; ye are fallen from grace.
Ephesians 2:4
But God, being rich in mercy, through the great love with which he hath loved us,
2 Timothy 1:9
who hath saved us, and called us with an holy calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before time had a beginning;
Titus 3:5
not for works of righteousness which we had done, but according to his mercy he saved us, by the laver of regeneration, and by renovation of the Holy Spirit;

General references

Acts 28:24
and some were convinced by the things which were spoken, but others continued in their unbelief.
Romans 4:4
Now to him that worketh, the reward is not brought to account as a favour, but as a debt.
Ephesians 2:9
not by works, lest any man should boast;