And if thy right hand offend thee - The right hand is selected for the same reason as the right eye, because it is one of the most important members of the human body. The idea is, that the dearest earthly objects are to be sacrificed rather than that we should commit sin; that the most rigid self-denial should be practiced, and that the most absolute self-government should be maintained at any sacrifice, rather than that we should suffer the mind to be polluted by unholy thoughts and impure desires.
Related Commentaries of Matthew 5:30
Matthew 5:30
30 And if thy right hand offend thee, cut it off, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell.