James 2:10

For if a man keeps the whole of the Law, and yet stumbles in one point, he is guilty of all.

Galatians 3:10

but a curse rests on those who have their root in the works of the Law; for it is written. Cursed is every one that continues not in all the things written in the Book of the Law, to do them.

Matthew 5:18-19

"In solemn truth I tell you that until heaven and earth pass away, not an iota, not a comma, will pass from the Law until all has taken place.

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
"In solemn truth I tell you that until heaven and earth pass away, not an iota, not a comma, will pass from the Law until all has taken place.
Galatians 3:10
but a curse rests on those who have their root in the works of the Law; for it is written. Cursed is every one that continues not in all the things written in the Book of the Law, to do them.