'Heard' in the Bible

For ye have heard of my conversation in time past in the Jews' religion, how that beyond measure I persecuted the church of God, and wasted it:

And [you have heard how] I surpassed many of my contemporaries among my countrymen in [my advanced study of the laws of] Judaism, as I was extremely loyal to the traditions of my ancestors.

But they had heard only, That he which persecuted us in times past now preacheth the faith which once he destroyed.

I want to learn only one thing from you: Did you receive the Spirit by doing the actions of the Law or by believing what you heard?

Does God supply you with the Spirit and work miracles among you because you do the actions of the Law or because you believe what you heard?