If your right eye causes you to sin, gouge it out and throw it away. It is better for you to lose one part of your body than for your whole body to be thrown into hell.
29. If thy right eye shall be a stumbling-block to thee. It might be thought that, considering the weakness of the flesh and of nature, Christ pressed too severely on men, and therefore he anticipates all such complaints. The general meaning is, that however difficult, or severe, or troublesome, or harsh, any commandment of God may be, yet no excuse ought to be pleaded on...
We have here an exposition of the seventh commandment, given us by the same hand that made the law, and therefore was fittest to be the interpreter of it: it is the law against uncleanness, which fitly follows upon the former; that laid a restraint upon sinful passions, this upon sinful appetites, both which ought always to be under the government of reason and conscience...
Commenting on Matthew 5:27-32
And if thy right eye offend thee,.... Or "cause thee to offend", to stumble, and fall into sin. Our Lord has no regard here to near and dear relations seeking to alienate us from God and Christ, and hinder us in the pursuit of divine things; whose solicitations are to be rejected with the utmost indignation, and they themselves to be parted with, and forsaken...