James 2:10

For whosoever may keep the whole law, and fail in one item, has become guilty of all.

Galatians 3:10

For so many as are of works of law are under the curse: for it is written, Cursed is every one who does not abide in all things which have been written in the book of the law, to do the same.

Matthew 5:18-19

For truly I say unto you, Until heaven and earth may pass away, one jot or tittle can not pass from the law, until all things may be accomplished.

Treasury of Scripture Knowledge

Summary

For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all.

Bible References

Whosoever

Matthew 5:18
For truly I say unto you, Until heaven and earth may pass away, one jot or tittle can not pass from the law, until all things may be accomplished.
Galatians 3:10
For so many as are of works of law are under the curse: for it is written, Cursed is every one who does not abide in all things which have been written in the book of the law, to do the same.