Acts 21:21

and they are informed of thee More clearly and in accordance with modern English, the Rev. Ver." they have been informed concerning thee." The verb is a very significant one, from which comes our English "catechize." It implies, therefore, that the process of educating public opinion in Jerusalem about St Paul had been a diligent business. They had taught the lesson persistently till their hearers were fully trained in it. We can hence understand the great hostility which the Apostle experienced, and his strong language about these Judaizers. They must have had their partizans at work in preparation for his visit, and have poisoned men's minds against him.

that thou teachest … to forsake Moses The calumniators made use of the Apostle's earnest words to Gentile converts, that they should not accept Judaism first as a door to Christianity, to bring a charge that, to Jews also, he spake of the law as no longer to be regarded. We can see from what we know of his words and actions how false this was, but at such a time and amid such a populace the charge would rouse great animosity, and have no chance of being refuted.

saying that they ought not to circumcise their children More simply (with Rev. Ver.), "telling them not to," &c. This had so long been the mark of the Jew, and the expression "uncircumcised" meant something so abhorrent to his mind, that we cannot wonder that this is put in the forefront of the charge. For the sense of contempt and abomination in the name, cf. 1 Samuel 17:26; Ezekiel 28:10; Ezekiel 32:29-30.

neither to walk after the customs The customs being the ceremonial law of the Jews. There is quite a Jewish sound in the frequent Old Testament phrase "to walk after."