This is an expression for the Gentiles believing the gospel of Jesus Christ, the Holy Spirit coming upon them and being baptized. (see [[rc://en/ta/man/translate/figs-metonymy]])
## When Peter had come up to Jerusalem ##
Jerusalem is located on a hill.
## circumcision group ##
These were a group of Jews who taught that all Christ's followers had to be circumcised and follow the law of Moses.