'According to the Law' in the Bible

Then some men came down from Judea and started to teach the brothers, "Unless you are circumcised according to the Law of Moses, you can't be saved."

and join in their expences, that they may shave their head: and that all may know, that there is nothing in what they have heard of thee; but thou thyself walkest according to the law.

"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.

And one Ananias, a devout man according to the law, having a good report of all the Jews which dwelt there,

Then said Paul unto him, God shall smite thee, thou whited wall: and sittest thou to judge me according to the law, and commandest me to be smitten contrary to the law?

But this I confess unto thee, that after the Way which they call a sect, so serve I the God of our fathers, believing all things which are according to the law, and which are written in the prophets;