John Chrysostom
Again the Apostle praises Titus. Since he had been speaking about almsgiving, he now wants to speak also about those who will receive the offerings from the Corinthians and carry them. This was needed to increase the collection and stir greater readiness in those who gave.
The one who is assured of the servant's honesty and does not regard the receivers with suspicion gives more generously. Listen, then, how here too he praises those sent with the alms, in order to achieve this. Titus was first among them.
He says: "Thanks be to God, Who put such earnest care for you into the heart of Titus." What does "such" mean? Such as he had for the Thessalonians, or such as I have. Notice his wisdom.
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Having shown that this is God's work, he gives thanks to the One Who gave it, so that by this also he may stir the Corinthians. "If God raised him up and sent him to you, then He Himself entreats through him. Therefore do not regard what has happened as a human matter."
But how is it clear that God Himself instructed him? "For though I urged him, yet being very earnest, he went to you of his own accord" (v. 17). See how he shows that Titus fulfills his work and does not need urging from others.
After giving thanks to God, the Apostle nevertheless does not ascribe everything to God. He says that Titus himself willingly undertook the work, so that by this again he might inspire greater love for him in them.
"Being very earnest, he went to you of his own accord," that is, "he seized the matter for himself, hastened to the treasure, counted it to his own advantage to serve you, and loves you so strongly that he did not even need exhortations from me. Though I urged him, he was moved not by this, but by his own will and by the grace of God."