Galatia was not a city but a province in Asia Minor. The church membership was undoubtedly composed mainly of Gentiles, and the males were physically uncircumcised (Galatians 5:2; 6:12-13). In looking at Paul's initial dealings with these people, we find that they had a history of worshipping pagan deities.
In Lystra, God healed a crippled man through Paul (Acts 14:8-18). The people of the area were so astonished at this miracle that they supposed Barnabas and Paul, whom they called Zeus and Hermes (verse 12), to be pagan gods! They wanted to sacrifice to them, and would have, if the apostles had not stopped them (verses 13-18). This shows that the people in Galatia were generally superstitious and worshipped pagan deities.
Earl L. Henn (1934-1997)
Does Paul Condemn Observing God's Holy Days?
Other Forerunner Commentary entries containing Acts 14:12: