Galatians 5:4

Christ is become nothing to you, whosoever of you are seeking to be justified by the law: ye are fallen from the grace of the gospel.

Hebrews 12:15

looking to it, least there be any one falling short of the grace of God, least any root of bitterness springing up should be troublesome, and by it many be defiled:

Romans 9:31-32

but Israel, who followed after the law of righteousness, hath not attained to the law of righteousness: why?

Galatians 2:21

I do not frustate the grace of God: for if righteousness be by the law, then Christ died in vain.

Galatians 5:2

Behold, I Paul say unto you, that if ye be circumcised, Christ will profit you nothing.

Romans 3:20

Wherefore by the works of the law no flesh shall be justified before Him: for by the law is the knowledge of sin.

Romans 4:4-5

Now to him that worketh the reward is not reckoned as a favor, but as a debt:

Romans 10:3-5

For being ignorant of the righteousness of God, and seeking to establish their own righteousness, they have not submitted themselves to the righteousness which is of God.

Romans 11:6

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

Galatians 1:6-9

I wonder that ye are so soon removed from him who called you by the grace of Christ to another gospel: which is not another;

Hebrews 6:4-6

who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the holy Spirit,

Hebrews 10:38-39

and the just shall live by faith, but if any draw back, my soul shall have no pleasure in him.

2 Peter 2:20-22

For if, after they had escaped the pollutions of the world, through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled and vanquished by them, their last state is worse than the first;

2 Peter 3:17-18

Do ye therefore, beloved, as ye know these things before, take heed least being seduced together with them by the error of the wicked, ye should fall from your own stedfastness.

Revelation 2:5

Remember therefore from whence thou art fallen, and repent, and do the first works: else I will come unto thee quickly, and will remove thy candlestick out of its place, if thou repent not.

Treasury of Scripture Knowledge

Summary

Christ is become of no effect unto you, whosoever of you are justified by the law; ye are fallen from grace.

Bible References

Is

Galatians 5:2
Behold, I Paul say unto you, that if ye be circumcised, Christ will profit you nothing.
Galatians 2:21
I do not frustate the grace of God: for if righteousness be by the law, then Christ died in vain.
Romans 9:31
but Israel, who followed after the law of righteousness, hath not attained to the law of righteousness: why?
Romans 10:3
For being ignorant of the righteousness of God, and seeking to establish their own righteousness, they have not submitted themselves to the righteousness which is of God.

Ye

Galatians 1:6
I wonder that ye are so soon removed from him who called you by the grace of Christ to another gospel: which is not another;
Romans 11:6
And if by grace, it is no more of works: for then grace is no longer grace. But if of works, it is no more grace: for then work is no longer work.
Hebrews 6:4
who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the holy Spirit,
Hebrews 10:38
and the just shall live by faith, but if any draw back, my soul shall have no pleasure in him.
Hebrews 12:15
looking to it, least there be any one falling short of the grace of God, least any root of bitterness springing up should be troublesome, and by it many be defiled:
2 Peter 2:20
For if, after they had escaped the pollutions of the world, through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled and vanquished by them, their last state is worse than the first;
2 Peter 3:17
Do ye therefore, beloved, as ye know these things before, take heed least being seduced together with them by the error of the wicked, ye should fall from your own stedfastness.
Revelation 2:5
Remember therefore from whence thou art fallen, and repent, and do the first works: else I will come unto thee quickly, and will remove thy candlestick out of its place, if thou repent not.

General references

Luke 5:38
but new wine must be put into new vessels, and then both are saved.
Galatians 2:3
But even Titus, who was with me, being a Greek, was not compelled to be circumcised;
Philippians 3:7
which were once gain to me, I counted loss for Christ.