Galatians 2:2

And I went up by revelation. Because Christ revealed to me that I ought to go.

Communicated to them that gospel which I preach among the Gentiles. For at least ten years he had been preaching among the Gentiles with great success, calling upon them to obey the gospel, not the law of Moses. He now explained to the Jerusalem Christians the gospel which he had preached, privately to them who were of reputation, to such men as Peter and James, so that there would be a full understanding before the public meeting described in Ac 15:5-22.

Lest by any means I should run, or had run, in vain. Lest his apostolic labor should be made fruitless by the action of the Jewish Christians.
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