'Among' in the Bible

to reveal his Son in me so that I could preach him among the Gentiles, I did not go to ask advice from any human being,

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.

Does God then give you the Spirit and work miracles among you by your doing the works of the law or by your believing what you heard?