'As It is Written' in the Bible

Also Jehoiada appointed the offices of the house of the LORD by the hand of the priests the Levites, whom David had distributed in the house of the LORD, to offer the burnt-offerings of the LORD, as it is written in the law of Moses, with rejoicing and with singing, as it was ordained by David.

But he slew not their children, but did as it is written in the law of the book of Moses, where the LORD commanded, saying, The fathers shall not die for the children, neither shall the children die for the fathers, but every man shall die for his own sin.

He appointed also the king's portion of his substance for the burnt-offerings, to wit, for the morning and evening burnt-offerings, and the burnt-offerings for the sabbaths, and for the new-moons, and for the set feasts, as it is written in the law of the LORD.

And they removed the burnt-offerings, that they might give according to the divisions of the families of the people, to offer to the LORD, as it is written in the book of Moses. And so did they with the oxen.