John Chrysostom
“Therefore we were comforted” (v. 13), that is, because “we showed our care for you, and everything was fulfilled according to our desire.”
Similarly he says elsewhere: “For now we live, if you stand in the Lord” (1 Thess 3:8). And again: “For what is our hope, or joy, or crown of boasting? Is it not you?” (1 Thess 2:19).
The progress of disciples is life, consolation, and delight for a prudent teacher. See how the apostle again praises the Corinthians and expresses his love for them.
Above, he spoke of his own joy that his first epistle had such success and brought such benefit: “I rejoice,” he says, “not because you were grieved, but because you were grieved unto repentance.”
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He also expressed his love for them: “If I wrote to you,” he says, “it was not for the sake of the offender, nor for the sake of the one offended, but that our care for you might be revealed to you.”
Now he presents another feature of their good disposition, which likewise brings them great praise and shows the sincerity of their love.
“We were comforted,” he says, “by your consolation; and still more abundantly we rejoiced at the joy of Titus.” At first sight this does not show his strong love for the Corinthians, because he rejoices more over Titus than over them.
“No,” he says, “I rejoiced not so much for Titus as for you.” Therefore he also gives the reason, saying: “because you all refreshed his spirit.”
He did not say, “you refreshed him,” but, “his spirit,” that is, his love for you. How did they “refresh” it? “By all of you,” because this too is the greatest praise.