'According to the Law' in the Bible

For they indeed of the sons of Levi, who are admitted to priesthood, have an order to receive tithes from the people according to the law, that is, of their brethren, though also sprung from the loins of Abraham.

For if he were on earth, he would not be a priest, there being priests who offer gifts according to the law;

For when every command according to the law had been spoken by Moses to all the people, taking the blood of calves and of goats, with water, and scarlet wool, and hyssop, he sprinkled both the book itself and all the people,

And almost all things are purified by blood according to the law, and without effusion of blood there is no remission of sin.

Having said before that sacrifice, and oblation, and whole burnt-offerings and sin-offerings thou hast not chosen, nor takest pleasure in, (which are offered according to the law,)