This verse, rendered as a statement in the Good News Translation, appears as a question in some translations (see Jerusalem Bible and Revised Standard Version). The basic issue is that of fellowship between the Jewish and Gentile Christians. From the strictly Jewish point of view it was bad enough for Peter to go and preach the message to the Gentiles, but even worse for him to be willing to eat with them. Peter, however, uses this incident as an argument against requiring Gentiles to be circumcised (see 15.7 ff.).

Quoted with permission from Newman, Barclay M. and Nida, Eugene A. A Handbook on The Acts of the Apostles. (UBS Handbook Series). New York: UBS, 1972. For this and other handbooks for translators see here .