Augustine of Hippo
Catena Aurea · Lukasevangelium 6
But I say unto you which hear, Love your enemies, do good to them which hate you, Bless them that curse you, and pray for them which despitefully use you. And unto him that smiteth thee on the one cheek offer also the other; and him that taketh away thy cloke forbid not to take thy coat also. Give to every man that asketh of thee; and of him that taketh away thy goods ask them not again. And as ye would that men should do to you, do ye also to them likewise. It follows, Bless them that curse you. But some one will say, How can this be? When thou hast seen God made man, and suffering so many things for thee, dost thou still ask and doubt how it is possible to pardon the iniquities of thy fellow servants? Who has suffered what thy God has, when He was bound, scourged, enduring to be spat upon, suffering death? Here it follows, But to every one who seeks, give. It follows, And of him that taketh away thy goods, ask them not again.
(de Ser. Dom. lib. 1. c. 19.) He says this of garments, houses, farms, beasts of burdens, and generally of all property. But a Christian ought not to possess a slave as he does a horse or money. If a slave is more honourably governed by thee than by him who desires to take him from thee, I know not whether any one would dare to say, that he ought to be despised, as a garment (ut vestimentum.)