James 2:10

For whoever keeps the whole law and yet stumbles in one point has become guilty of all of it.

Galatians 3:10

For all who rely on works of the law are under a curse; for it is written, "Cursed is everyone who does not abide by all things written in the book of the law, to do them."

Matthew 5:18-19

For truly, I say to you, till heaven and earth pass away, not an iota, not a dot, will by any means pass from the Law until all is 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 to you, till heaven and earth pass away, not an iota, not a dot, will by any means pass from the Law until all is accomplished.
Galatians 3:10
For all who rely on works of the law are under a curse; for it is written, "Cursed is everyone who does not abide by all things written in the book of the law, to do them."