i may be wrong but i think he said that because they wouldn't preach or minister to the gentiles. he said that right before he left to preach to the gentiles.
Paul's tone in Galatians could be described as passionate, stern, and urgent. He was addressing the issue of the Galatians turning away from the gospel message, and he expressed strong emotions in order to correct and warn them.
In Paul's letter to the Galatians, Galatians 2:11
The apostle Paul was the author of the Book of Galatians.
The Apostle Paul was sent to the various gentile peoples of which the Galatians were one.
AnswerPart of the reason for Paul's Epistle to the Galatians seems to be to seek money for the poor in Jerusalem, possibly during the Great Famine of 44-48 CE. At the same time, Paul was very defensive, referring to the Galatians as foolish for listening to other apostles who had been trying to undermine his work. He faced the risk of failing to collect for the Jerusalem Church, as he had promised its leaders (Galatians 2:10), or even of losing his own leadership of the Galatian Church altogether. In fact, the Epistle to the Galatians was preserved by the Galatians and eventually passed down to us, which implies that at least some of the community remained faithful to his version of Christianity.1 Corinthians 16:1 has good news, because it talks of the planned collection of money from the Galatian churches, apparently with some hope of success. Paul mentioned the collection somewhat later in Romans, listing only Macedonia and Achaia (Corinth) as contributing, to the obvious exclusion of the Galatians. There seems little doubt that, in the end, the Galatians did not contribute to Paul's collection. This could mean that the Galatians themselves were suffering too much to be able to contribute, or that some time after 1 Corinthians but before Romans, the Galatians cut their ties with Paul and joined a different branch of Christianity.
ThenBook of Galatians which is one of 66 books in the Bible was written by Paul
Bible, New Testament, Paul's Letter to the Galatians, Chapter 2, Verse 8.
Galatians
St. Paul mentions in his Epistle to the Galatians, that Christ "was Born of a Woman."
Galatians was written to the churches in Galatia.
The New Testament Letter addressed to Paul's converts in modern Turkey is the Letter to the Ephesians. This letter was written by the apostle Paul to the Christians in Ephesus, which is located in present-day Turkey. It addresses various theological and ethical issues, emphasizing unity in Christ and the spiritual blessings believers receive in him.
Paul was correcting wrong thinking that had quickly developed in the congregations of Galatia(Galatians 1:6). Certain Jews were trying to teach that circumcision (and other facets of the Law) were still required among Christians and Paul was reprimanding congregation members for being influenced by their false teachings(Galatians 2:15-3:14; 4:9+10) These ' false brothers', called 'Judaizers', were sly and concerned with their own interests (Acts 15:1/Galatians 2:4). Pretending to represent the congregation in Jerusalem, they discredited Paul and wanted the Christians to get circumcised(Galatians 4:17), to try and stop Jewish persecution of Christians. Paul wrote to the Galatians to remind them that they were no longer under the Mosaic Law(Galatians 2:15-21)(Galatians 1:6-9/Galatians 5:1-12/Galatians 6:12-16), but that they were acceptable to God because of their FAITH in the good news about Jesus (Galatians 3:1-5)(Galatians 4:1-7), and that the 'true sons of Abraham' were those with FAITH like Abraham's (Galatians 3:6-9+26-29).