It is an unlawful thing - This was not explicitly enjoined by Moses, but it seemed to be implied in his institutions, and was, at any rate, the common understanding of the Jews. The design was to keep them a separate people. To do this, Moses forbade alliances by contract, or marriage, with the surrounding nations, which were idolatrous. See Leviticus 18:24-30; Deuteronomy 7:3-12; compare Ezra 9:11-12. This command the Jews perverted, and explained it as referring to contact of all kinds, even to the exercise of friendly offices and commercial transactions. Compare John 4:9.

Of another nation - Greek: another tribe. It refers here to all who were not Jews.

God hath showed me - Compare Acts 15:8-9. He had showed him by the vision, Acts 10:11-12.

Any man common or unclean - See the notes on Acts 10:14. That no man was to be regarded as excluded from the opportunity of salvation, or was to be despised and abhorred. The gospel was to be preached to all; the barrier between Jews and Gentiles was broken down, and all were to be regarded as capable of being saved.

Ye know how that it is an unlawful thing, etc. - He addressed the whole company, among whom, it appears, there were persons well acquainted with Jewish customs; probably some of them were Jewish proselytes.

But God hath showed me, etc. - He now began to understand the import of the vision which he saw at Joppa. A Gentile is not to be avoided because he is a Gentile; God is now taking down the partition wall which separated them from the Jews.

And he said unto them,.... The whole company that were met together, who were chiefly, if not altogether Gentiles:

ye know that it is an unlawful thing; what is forbidden by the law of Moses, Deuteronomy 7:2 and by the traditions of the elders, which carry the matter further than the law did, and made it very criminal:

for a man that is a Jew, to keep company with, or come unto one of another nation; besides entering into covenants and marriages with them, which were forbidden by the law, though they allowed of trade and commerce with the Gentiles, yet not any familiar conversation with them; it was prohibited to eat and drink any sort of liquor with them in their houses (h), nor might they walk with them in the streets, or on the road; says Maimonides (i),

"it is forbidden a Jew to unite himself to Gentiles, because they are suspected of shedding blood, and he may not join himself with them in the way; if he meets a Gentile in the way, he causes him to turn to the right hand; if they ascend by an ascent, or descend by a descent, the Israelite may not be below, and the Gentile above: but the Israelite must be above, and the Gentile below, lest he should fall upon him and kill him; and he may not go even with (or along side by him) lest he break his skull.''

It is said (k) of some Rabbins, that they saw a certain man coming;

"says R. Chiyah, let us be gone, perhaps this man is an idolatrous Gentile, or one of the people of the earth, and it is forbidden to join with him in the way.''

They looked upon the houses of Gentiles unclean, and therefore would not enter into them: See Gill on John 18:28.

yea they say (l), that:

"the court of a stranger (or Gentile) is as the habitation of a beast.''

Such an aversion was there in that people to all civil society with Gentiles: and so Apoltonius says of them (m), that

"they not only departed from the Romans, but from all men, living a separate life from others; nor did they communicate at table with others; neither in things sacred, nor in any ceremonies;''

and this was well known to Jews and Gentiles:

but God hath showed me; partly by the vision he had seen, and partly by discourse with the men that came from Cornelius to him; and by comparing the vision and their message to him together, he saw that he was not obliged to abide by the customs and laws of the Jews: but was showed, as he says,

that I should not call any man common or unclean; that is, in a ceremonial sense; for otherwise, all by nature are morally unclean; and none are pure, but such who are washed in the blood of Christ, and are justified by his righteousness, and sanctified by his Spirit: he saw there was now no difference between Jew and Gentile; that the one was not clean because of his circumcision, nor the other unclean on account of his uncircumcision, or to be avoided for that reason; that the Gospel was to be preached to all; and that every believer of whatsoever nation, was acceptable to God, and ought to be regarded by his ministers and people.

continued...

An unlawful thing (ἀθέμιτον)

The word is peculiar to Peter, being used only here and 1 Peter 4:3. See note there. It emphasizes the violation of established order, being from the same root as τίθημι, to lay down or establish. The Jews professed to ground this prohibition on the law of Moses; but there is no direct command in the Mosaic law forbidding Jews to associate with those of other nations. But Peter's statement is general, referring to the general practice of the Jews to separate themselves in common life from uncircumcised persons. Juvenal says that the Jews were taught by Moses "not to show the way except to one who practises the same rites, and to guide the circumcised alone to the well which they seek" (Sat., xiv., 104, 105). Tacitus also says of the Jews that "among themselves they are inflexibly faithful, and ready with charitable aid, but hate all others as enemies. They keep separate from all strangers in eating, sleeping, and matrimonial connections" ("Histories," v., 5).

Of another nation (ἀλλοφύλῳ)

Only here in New Testament. Used of the Philistines, 1 Samuel 13:3-5 (Sept.).

Me

Emphatic, by contrast with ye. "Ye know," etc., "but God hath showed me."

And he said unto them, Ye know how that it is an unlawful thing for a man that is a Jew to keep company, or come unto one of another nation; but God hath shewed me that I should not call any man common or unclean.

10:28 Ye know how that it is an unlawful thing. Contrary to Jewish customs. Moses prohibited intermarriages and religious intercourse, but the Jews carried their restrictions beyond both the letter and spirit of the law. They would not eat with the uncircumcised (Ga 2:12).

10:28 But God hath showed me - He speaks sparingly to them of his former doubt, and his late vision.

28. Ye know it is . unlawful . for . a Jew to keep company, or come unto one of another nation, &c.-There was no express prohibition to this effect, and to a Certain extent intercourse was certainly kept up. (See the Gospel history, towards the end). But intimate social fellowship was not practiced, as being adverse to the spirit of the law.

10:19-33 When we see our call clear to any service, we should not be perplexed with doubts and scruples arising from prejudices or former ideas. Cornelius had called together his friends, to partake with him of the heavenly wisdom he expected from Peter. We should not covet to eat our spiritual morsels alone. It ought to be both given and taken as kindness and respect to our kindred and friends, to invite them to join us in religious exercises. Cornelius declared the direction God gave him to send for Peter. We are right in our aims in attending a gospel ministry, when we do it with regard to the Divine appointment requiring us to make use of that ordinance. How seldom ministers are called to speak to such companies, however small, in which it may be said that they are all present in the sight of God, to hear all things that are commanded of God! But these were ready to hear what Peter was commanded of God to say.