NET

2 I went there because of a revelation and presented to them the gospel that I preach among the Gentiles. But I did so only in a private meeting with the influential people, to make sure that I was not running—or had not run—in vain.

Darby

2 and I went up according to revelation, and I laid before them the glad tidings which I preach among the nations, but privately to those conspicuous [among them], lest in any way I run or had run in vain;

KJV

2 And I went up by revelation, and communicated unto them that gospel which I preach among the Gentiles, but privately to them which were of reputation, lest by any means I should run, or had run, in vain.