Charles Ellicott Commentary James 2:10

"For whosoever shall keep the whole law, and yet stumble in one [point], he is become guilty of all." — James 2:10 (ASV)

For whosoever shall keep . . .—Better, have kept the whole Law, but shall have offended in one, has become guilty of all. As a chain is snapped by failure of the weakest link, so the whole Law, in its harmony and completeness as beheld by God, is broken by one offence of one man; and the penalty falls, of its own natural weight and incidence, on the culprit.