John Wesley on Acts 21:21

They have been informed concerning thee, that thou teachest the Jews - not to circumcise their children, nor to walk after the customs - Of the Mosaic law. And so undoubtedly he did. And so he wrote to all the Churches in Galatia, among whom were many Jews. Yea, and James himself had long before assented to Peter, affirming before all the apostles and all the brethren, Acts 15:10, That this very law was a yoke which (said he) neither our fathers nor we were able to bear - Amazing! that they did not know this! Or, that if they did, they did not openly testify it at all hazards, to every Jewish convert in Jerusalem!