Ambrosiaster : It is because the flesh is irrational that Paul says that it has no rest from its suffering. But the soul, although it was suffering in the body, did have rest. This is because of the hope that God would reward them for the tribulations inflicted on them by unbelievers. Fightings were inflicted on the body, and fears attacked the soul, but Paul was not at all afflicted in the Spirit, who was given to him so that he might endure such things. — COMMENTARY ON PAUL'S EPISTLES John Chrysostom : "For even when we were come into Macedonia, our flesh had no relief." For since he said, "our tribulation;" he both explains of what sort it was, and magnifies it by his words, in order to show that the consolation and joys received from them was great, seeing it had repelled so great a sorrow. "But we were afflicted on every side." How on every side? for "without were fightings," from the unbelievers; "within were fears;" because of the weak among the believers, lest they should be drawn aside. For not amongst the Corinthians only did these things happen, but elsewhere also. — Homily 14 on 2 Corinthians Tertullian : Accordingly, when he is going to assign afflictions to the flesh as its especial liability-according to the statement he had already made-he says, "When we were come into Macedonia, our flesh had no rest; " then, in order to make the soul a fellow-sufferer with the body, he adds, "We were troubled on every side; without were fightings," which of course warred down the flesh, "within were fears," which afflicted the soul. — On the Resurrection of the Flesh Theodoret of Cyrus : Paul had to do battle not only with external foes but also with enemies within the fellowship of the church. He was afraid that believers would be turned away to harmful things. — COMMENTARY ON THE SECOND EPISTLE TO THE CORINTHIANS 323