'It is Written' in the Bible

Moreover, Jehoiada placed the offices of the house of the Lord under the authority of the Levitical priests, whom David had assigned over 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 singing according to the order of David.

However, he did not put their children to death, but did as it is written in the law in the book of Moses, which the Lord commanded, saying, “Fathers shall not be put to death for sons, nor sons be put to death for fathers, but each shall be put to death for his own sin.”

He also appointed the king’s portion of his goods for the burnt offerings, namely, for the morning and evening burnt offerings, and the burnt offerings for the sabbaths and for the new moons and for the fixed festivals, as it is written in the law of the Lord.

Then they removed the burnt offerings that they might give them to the sections of the fathers’ households of the lay people to present to the Lord, as it is written in the book of Moses. They did this also with the bulls.