John Chrysostom
In addition, he draws reproofs from the agreement of all and from the universality of the commandments, as he does here: “Or did the word of God come out from you? Or did it reach you alone?” (1 Cor 14:36).
Here he expresses that the other churches observe the same law. In this way, he cuts off the disorder by pointing to an innovation, and makes his words more persuasive by appealing to the voice of all.
Therefore he also said elsewhere, “I have sent Timothy to you, my beloved and faithful son in the Lord, who will remind you of my ways in Christ, as I teach everywhere in every church” (1 Cor 4:17).
And again, “For God is not a God of disorder, but of peace. As in all the churches of the saints” (1 Cor 14:33).
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And here: “Or did the word of God come out from you? Or did it reach you alone?” That is, you are not the first, and you alone are not the faithful, but the whole universe is so.
He said the same in the Epistle to the Colossians, when speaking of the Gospel: “which has come to you, as also in all the world” (Col 1:6).
He also acts otherwise for the exhortation of his hearers. Sometimes he points to something as having first belonged to them and then become known among all.
Thus in the Epistle to the Thessalonians he says, “From you the word of the Lord has sounded forth, not only in Macedonia and Achaia, but in every place your faith in God has gone abroad” (1 Thess 1:8).
Likewise to the Romans: “Your faith is proclaimed in all the world” (Rom 1:8).
Both things can persuade and encourage: praise from others, and the indication of agreement with others in their way of thinking.
Therefore here too he says, “Or did the word of God come out from you? Or did it reach you alone?”
You cannot say, he says, “We were teachers of others, and we ought not to learn from others.” Nor can you say, “Only here has the teaching of faith been established, and we ought not to imitate the example of others.”
Do you see how many arguments he brought for their reproof? He brought forward the law, showed the shamefulness of the matter, and presented the other churches as an example.