'Believed' in the Bible

Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ, that we might be justified by the faith of Christ, and not by the works of the law: for by the works of the law shall no flesh be justified.

Answer me this one question, "Is it on the ground of your obedience to the Law that you received the Spirit, or is it because, when you heard, you believed?"

He who gives you His Spirit and works miracles among you--does He do so on the ground of your obedience to the Law, or is it the result of your having heard and believed:

Even as Abraham believed God, and it was accounted to him for righteousness.

Therefore, those who believe are blessed together with Abraham, the one who believed.