And if your right hand causes you to offend, cut it off, and cast it from you: for it is better for you that one of your members should perish, and not that your whole body should be cast into hell.
All Commentaries on Matthew 5:30 Go To Matthew 5
Augustine of Hippo
AD 430
In this connection, I can think of no more fitting example than that of a dearly beloved friend, for that which we ardently love is certainly that which we may rightly call a member. And we may rightly call this member a counselor, for he is, as it were, an eye that shows the way, and because he is on the right side, we may rightly call him a counselor in divine matters. In this way, a friend on the left side is indeed a counselor, but a counselor in earthly matters, which pertain to the needs of the body. However, it would be superfluous to talk about him insofar as he may be an occasion of sin, since not even the friend on the right side is to be spared. But a counselor in divine matters is actually a stumbling block if, under the guise of religion and doctrine, he is trying to lead us into some pernicious belief. Let the right hand therefore be understood as a beloved helper and minister in divine works. For, just as contemplation is properly represented by the word eye, so action is rightly represented by the word hand. In this way, the left hand signifies the works that are necessary for this life and body. .