Romans 11:6

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

Deuteronomy 9:4-6

Speak not thou in thy heart, after that Jehovah thy God hath thrust them out from before thee, saying, For my righteousness Jehovah hath brought me in to possess this land; whereas for the wickedness of these nations Jehovah doth drive them out from before thee.

Romans 3:27-28

Where then is the glorying? It is excluded. By what manner of law? of works? Nay: but by a law of faith.

Romans 4:4-5

Now to him that worketh, the reward is not reckoned as of grace, but as of debt.

Romans 5:20-21

And the law came in besides, that the trespass might abound; but where sin abounded, grace did abound more exceedingly:

1 Corinthians 15:10

But by the grace of God I am what I am: and his grace which was bestowed upon me was not found vain; but I labored more abundantly than they all: yet not I, but the grace of God which was with me.

Galatians 2:21

I do not make void the grace of God: for if righteousness is through the law, then Christ died for nought.

Galatians 5:4

Ye are severed from Christ, ye would be justified by the law; ye are fallen away from grace.

Ephesians 2:4-9

but God, being rich in mercy, for his great love wherewith he loved us,

2 Timothy 1:9

who saved us, and called us with a holy calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before times eternal,

Titus 3:5

not by works done in righteousness, which we did ourselves, but according to his mercy he saved us, through the washing of regeneration and renewing 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.

Bible References

And if

Romans 3:27
Where then is the glorying? It is excluded. By what manner of law? of works? Nay: but by a law of faith.
Romans 4:4
Now to him that worketh, the reward is not reckoned as of grace, but as of debt.
Romans 5:20
And the law came in besides, that the trespass might abound; but where sin abounded, grace did abound more exceedingly:
Deuteronomy 9:4
Speak not thou in thy heart, after that Jehovah thy God hath thrust them out from before thee, saying, For my righteousness Jehovah hath brought me in to possess this land; whereas for the wickedness of these nations Jehovah doth drive them out from before thee.
1 Corinthians 15:10
But by the grace of God I am what I am: and his grace which was bestowed upon me was not found vain; but I labored more abundantly than they all: yet not I, but the grace of God which was with me.
Galatians 2:21
I do not make void the grace of God: for if righteousness is through the law, then Christ died for nought.
Galatians 5:4
Ye are severed from Christ, ye would be justified by the law; ye are fallen away from grace.
Ephesians 2:4
but God, being rich in mercy, for his great love wherewith he loved us,
2 Timothy 1:9
who saved us, and called us with a holy calling, not according to our works, but according to his own purpose and grace, which was given us in Christ Jesus before times eternal,
Titus 3:5
not by works done in righteousness, which we did ourselves, but according to his mercy he saved us, through the washing of regeneration and renewing of the Holy Spirit,

General references

Genesis 6:8
But Noah found favor in the eyes of Jehovah.
Psalm 44:9
But now thou hast cast us off, and brought us to dishonor, And goest not forth with our hosts.
Isaiah 17:6
Yet there shall be left therein gleanings, as the shaking of an olive-tree, two or three berries in the top of the uppermost bough, four or five in the outmost branches of a fruitful tree, saith Jehovah, the God of Israel.
Isaiah 65:8
Thus saith Jehovah, As the new wine is found in the cluster, and one saith, Destroy it not, for a blessing is in it: so will I do for my servants'sake, that I may not destroy them all.
Lamentations 3:31
For the Lord will not cast off for ever.
Ezekiel 6:8
Yet will I leave a remnant, in that ye shall have some that escape the sword among the nations, when ye shall be scattered through the countries.
Acts 28:24
And some believed the things which were spoken, and some disbelieved.
Romans 4:4
Now to him that worketh, the reward is not reckoned as of grace, but as of debt.
Ephesians 2:9
not of works, that no man should glory.

American Standard Version Public Domain