John Chrysostom
See: he immediately begins to speak of the love of God for mankind and shows that He has granted them great blessings.
Yet what is worthy of wonder here is not only that he speaks of such matters, but also how he speaks of lofty things while preserving humility.
He did not say, "We are men who deem no one worthy of our fellowship, yet we have come to you." Rather, what does he say? "You know."
God, he says, forbade us to enter into communion or have dealings with a foreigner.
Then, so as not to seem partial to him, he continues: "but God has shown me that I should not call any man common or unclean."
He adds this so that they would not think he was flattering him.
See how Peter shows the divine character of his coming when he says, "You know that it is forbidden for a Jew."
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Why did he not speak immediately about the sheet? Because he was very free from vainglory.
He says that he was sent by God, but not yet how. When the need was disclosed, then he said it.
"You know that it is forbidden for a Jew to associate with or draw near to a foreigner." So far was he from vainglory.
"You know." In saying this, he appeals also to their knowledge.