'Written' in the Bible

So all Israel was enrolled by genealogies; and behold, they are written in the Book of the Kings of Israel. And Judah was carried away into exile to Babylon for their unfaithfulness.

to offer burnt offerings to the Lord on the altar of burnt offering continually morning and evening, even according to all that is written in the law of the Lord, which He commanded Israel.

Now the acts of King David, from first to last, are written in the chronicles of Samuel the seer, in the chronicles of Nathan the prophet and in the chronicles of Gad the seer,