Wherefore, if thy hand or foot offend thee— Insnare thee. Campbell, and so Matthew 18:9. Our Lord here renews the exhortation which he formerly gave, Ch. Matthew 5:29-30 rather to submit to the severest mortifications, than to indulge our sinful inclinations, to the scandal of others, and our own ruin. We may observe, that St. Matthew, who has so largely recorded the sermon on the mount, gives us again this passage of it on the present occasion; which is one proof among others, that our Lord did not think it improper or unnecessary sometimes to repeat what he had then said; and considering the importance of these maxims, and how little many of his hearers were disposed to receive and retain them, it was a valuable instance of his compassion and wisdom. See Doddridge.
Related Commentaries of Matthew 18:8
Matthew 18:8
8 Wherefore if thy hand or thy foot offend thee, cut them off, and cast them from thee: it is better for thee to enter into life halt or maimed, rather than having two hands or two feet to be cast into everlasting fire.