Why was Paul brought from Antioch to Jerusalem in Galatians 2?

Paul was brought from Antioch to Jerusalem to confront Jewish believers who acknowledged Jesus as the Christ regarding his ministry to the Gentiles. The leaders examined and questioned his apostolic work among Gentiles, placing him on the carpet, so to speak, requiring him to defend and stand on his own two feet before them.

Les explains that in Galatians Paul is rehearsing an event around 51 A.D., about twenty-two years after Pentecost. Paul had been brought back down to Jerusalem from Antioch to confront the Jewish believers, who believed Jesus was the Christ, about his ministry to Gentiles. In Galatians 2:6 Paul refers to those who seemed to be somewhat—the leaders, the disciples, and probably others. When they brought Paul to Jerusalem, they put him on the carpet regarding his ministry to those Gentiles, and he had to stand on his own two feet. They added nothing to him, and God accepted no man's purse. Paul was being instructed to write by the Holy Spirit.

Galatians 2:6

But of these who seemed to be somewhat, (whatsoever they were, it maketh no matter to me: God accepteth no man’s person:) for they who seemed to be somewhat in conference added nothing to me:

What happened when Paul was brought before the Jerusalem church about his Gentile ministry?

When Paul was brought from Antioch to Jerusalem, he confronted Jewish believers about his ministry to Gentiles. The prominent leaders added nothing to him. He had to stand on his own two feet as they examined his Gentile ministry, and the conference contributed nothing to his message.