And whosoever shall offend one of these little ones that believe in me, it is better for him that a millstone were hanged about his neck, and he were cast into the sea.
All Commentaries on Mark 9:42 Go To Mark 9
Augustine of Hippo
AD 430
De Con. Evan., 4, 5: We must take care that this saying of the Lord appear not to be contrary to that where He says, “He who is not with Me is against Me.” But surely what is implied is that aman is not with Him in as far as he is against Him, and is not against Him inas far as he is with Him. For instance, he who worked miracles in the name of Christ, and yet did not join himself to the body of His disciples, inas far as he worked the miracles in His name, was with them, and was not against them; again, in that he did not join their society, he was not with them, and was against them. Be because they forbade his doing that in which he was with them, the Lord said unto them, “Forbid him not:” for they ought to have forbidden his being without their society, and thus to have persuaded him of the unity of the Church, but they should not have forbidden that in which he was with them, that is, his commendation of the name of their Lord and Master by the expulsion of devils. Thus the Church Catholic does not disapprove in heretics the sacraments, which are common, but she blames their division, or some opinion of theirs adverse to peace and to truth; for in this they are against us. There follows, “For whosoever shall give you a cup of cold water to drink in My name, because ye belong to Christ, verily I say unto you, he shall not lose his reward.”.
de Con. Evan., 4, 6: By which He shews, that he of whom John had spoken was not so far separated from the fellowship of the disciples, as to reject it, as a heretic, but as men are wontto hang back from receiving the Sacraments of Christ, and yet favour the Christian name, so as even to succour Christians, and do them service only because they are Christians. Of these He says they shall not lose their reward; not that they ought already to think themselves secure on account of this goodwill which they have towards Christians, without being washed with His baptism, and incorporated in His unity, but that they are already so guided by the mercy of God, as also to attain to these, and thus to go away from this life insecurity.