James 2:10

For whoever keeps the whole Law but stumbles in one point, he has become guilty of [breaking] all of it.

Galatians 3:10

For all who depend on the Law [seeking justification and salvation by obedience to the Law and the observance of rituals] are under a curse; for it is written, “Cursed (condemned to destruction) is everyone who does not abide by all things written in the book of the law, so as to practice them.”

Deuteronomy 27:26

‘Cursed is he who does not confirm the words of this law by doing them [keeping them, taking them to heart as the rule of his life].’ And all the people shall say, ‘Amen.’

Matthew 5:18-19

For I assure you and most solemnly say to you, until heaven and earth pass away, not the smallest letter or stroke [of the pen] will pass from the Law until all things [which it foreshadows] are accomplished.

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

Whosoever

Deuteronomy 27:26
‘Cursed is he who does not confirm the words of this law by doing them [keeping them, taking them to heart as the rule of his life].’ And all the people shall say, ‘Amen.’
Matthew 5:18
For I assure you and most solemnly say to you, until heaven and earth pass away, not the smallest letter or stroke [of the pen] will pass from the Law until all things [which it foreshadows] are accomplished.
Galatians 3:10
For all who depend on the Law [seeking justification and salvation by obedience to the Law and the observance of rituals] are under a curse; for it is written, “Cursed (condemned to destruction) is everyone who does not abide by all things written in the book of the law, so as to practice them.”

General references

Deuteronomy 5:18
‘You shall not commit adultery.
Deuteronomy 6:25
It will be [considered] righteousness for us [that is, right standing with God] if we are careful to observe all this commandment before the Lord our God—just as He has commanded us.