Augustine of Hippo
Catena Aurea · Matthäusevangelium 5
Ye have heard that it hath been said, An eye for an eye, and a tooth for a tooth: But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also. And if any man will sue thee at the law, and take away thy coat, let him have thy cloak also. And whosoever shall compel thee to go a mile, go with him twain. Give to him that asketh thee, and from him that would borrow of thee turn not thou away.
(de Mendac. 15.) The things which are done by the Saints in the New Testament profit for examples of understanding those Scriptures which are modelled into the form of precepts. Thus we read in Luke; Whoso smiteth thee on the one cheek, turn to him the other also. (Luke 6:29.) Now there is no example of patience more perfect than that of the Lord; yet He, when He was smitten, said not, ‘Behold the other cheek,’ but, If I have spoken amiss, accuse me wherein it is amiss; but if well, why smitest thou me? (John 18:23.) hereby shewing us that that turning of the other cheek should be in the heart.