'According to the Law' in the Bible

And when the time of their purification according to the law of Moses was completed, they brought him up to Jerusalem to present him to the Lord

And when they had performed everything according to the law of the Lord, they returned to Galilee, to their own city, Nazareth.

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

"A certain Ananias, a devout man according to the Law, and well spoken of by all the Jews who lived there,

Then Paul said to him, "God shall strike you, you whitewashed wall! Do you sit to judge me according to the law, and yet contrary to the law you order me to be struck?"

Now if he were on earth, he would not be a priest at all, since there are priests who offer the gifts according to the law.

When he said above, "You did not desire, nor did you take pleasure in sacrifices and offerings and burnt offerings and sin offerings" (these are offered according to the law),