'According to the Law' in the Bible

"I am a Jew, born in Tarsus in Cilicia, but brought up in this city, educated with strictness under Gamaliel according to the law of our ancestors, and was zealous for God just as all of you are today.

A man named Ananias, a devout man according to the law, well spoken of by all the Jews who live there,

Then Paul said to him, "God is going to strike you, you whitewashed wall! Do you sit there judging me according to the law, and in violation of the law you order me to be struck?"

But I confess this to you, that I worship the God of our ancestors according to the Way (which they call a sect), believing everything that is according to the law and that is written in the prophets.