Galatians 5:4

Ye are entirely separated from Christ, who seek to obtain righteousness through the Law; ye have fallen away from grace.

Hebrews 12:15

looking diligently, lest any one come short of the grace of God; lest any root of bitterness springing up trouble you, and the many be thereby defiled;

Romans 9:31-32

while Israel, which strove after a law of righteousness, did not attain to a law of righteousness.

Galatians 2:21

I do not set aside the grace of God; for if righteousness come through the Law, then did Christ die for nought.

Galatians 5:2

Behold, I Paul say to you, that if ye are circumcised, Christ will profit you nothing;

Romans 3:20

Because by works of the Law no flesh shall be accepted as righteous: for by the Law is the knowledge of sin.

Romans 4:4-5

Now to him that performeth works, the reward is not accounted a matter of grace, but of debt;

Romans 10:3-5

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

Romans 11:6

And if it is by grace, it is no longer on account of works; otherwise grace ceaseth to be grace; but if it is of works, there is then no grace; otherwise work ceaseth to be work. How is it then?

Galatians 1:6-9

I marvel that ye are so soon turning from him that called you in the grace of Christ, to a different gospel;

Hebrews 6:4-6

For it is impossible that those who have once been enlightened, and have tasted of the heavenly gift, and been make partakers of the Holy Spirit,

Hebrews 10:38-39

Now my righteous man shall live by faith; but if he draw back, my soul hath no pleasure in him."

2 Peter 2:20-22

For if after they have escaped the pollutions of the world through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled therein and overcome, the last state is worse with them than the first.

2 Peter 3:17-18

Do ye therefore, beloved, seeing ye know these things beforehand, beware lest, being led away with the error of the lawless, ye fall from your own steadfastness.

Revelation 2:5

Remember therefore whence thou hast fallen, and repent, and do the first works; or else I will come to thee, and will remove thy candlestick out of its place, unless thou repent.

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 to you, that if ye are circumcised, Christ will profit you nothing;
Galatians 2:21
I do not set aside the grace of God; for if righteousness come through the Law, then did Christ die for nought.
Romans 9:31
while Israel, which strove after a law of righteousness, did not attain to a law of righteousness.
Romans 10:3
For being ignorant of the righteousness which is of God, and endeavoring to establish a righteousness of their own, they have not submitted themselves to the righteousness which is of God.

Ye

Galatians 1:6
I marvel that ye are so soon turning from him that called you in the grace of Christ, to a different gospel;
Romans 11:6
And if it is by grace, it is no longer on account of works; otherwise grace ceaseth to be grace; but if it is of works, there is then no grace; otherwise work ceaseth to be work. How is it then?
Hebrews 6:4
For it is impossible that those who have once been enlightened, and have tasted of the heavenly gift, and been make partakers of the Holy Spirit,
Hebrews 10:38
Now my righteous man shall live by faith; but if he draw back, my soul hath no pleasure in him."
Hebrews 12:15
looking diligently, lest any one come short of the grace of God; lest any root of bitterness springing up trouble you, and the many be thereby defiled;
2 Peter 2:20
For if after they have escaped the pollutions of the world through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled therein and overcome, the last state is worse with them than the first.
2 Peter 3:17
Do ye therefore, beloved, seeing ye know these things beforehand, beware lest, being led away with the error of the lawless, ye fall from your own steadfastness.
Revelation 2:5
Remember therefore whence thou hast fallen, and repent, and do the first works; or else I will come to thee, and will remove thy candlestick out of its place, unless thou repent.

General references

Luke 5:38
But new wine must be put into new skins.
Galatians 2:3
But not even Titus, who was with me, though he was a Greek, was compelled to be circumcised;
Philippians 3:7
But whatever things were gain to me, those for the sake of Christ I have counted but loss.