2 Corinthians 11:29

Cyprian Epistle XI

That you bewail and grieve over the downfall of our brethren I know from myself, beloved brethren, who also bewail with you and grieve for each one, and suffer and feel what the blessed apostle said: "Who is weak," said he, "and I am not weak? who is offended, and I burn not? "[3]

Cyprian Epistle LIX

and in another place he says, "Who is weak, and I am not weak? "[4]

The First Epistle of Clement Concerning Virginity

And this is comely and right and just, that we visit our neighbours for the sake of God with all seemliness of manner and purity of behaviour; as the Apostle hath said: "Who is sick, and I am not sick? who is offended, and I am not offended? "[127]

Origen Commentary on John Book X

and not by commandment, there we may recognize that he is weak; for who, he says,[17]

Origen Commentary on Matthew Book XII

But, so far as it depends on himself, he who says or does such things is a stumbling-block even to him who will not be offended; unless perhaps Jesus calls the disciple who sinned a stumbling-block even to Himself, as much more than Paul He would have said from love, "Who is weak, and I am not weak? Who is made to stumble, and I burn not? "[161]