'Doing' in the Bible

Until certain people came from James, he had been eating with the Gentiles. But when they arrived, he stopped doing this and separated himself because he was afraid of those who were pro-circumcision.

The only thing I want to learn from you is this: Did you receive the Spirit by doing the works of the law or by believing what you heard?

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?

For all who rely on doing the works of the law are under a curse, because it is written, "Cursed is everyone who does not keep on doing everything written in the book of the law."

So we must not grow weary in doing good, for in due time we will reap, if we do not give up.