James 2:10

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

Galatians 3:10

for it is written, Cursed is every one who continueth not in all the things which are written in the book of the law, to do them.

Matthew 5:18-19

For verily I say to you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all things be effected.

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 verily I say to you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all things be effected.
Galatians 3:10
for it is written, Cursed is every one who continueth not in all the things which are written in the book of the law, to do them.