In the eighteenth year - This is the date of the finding of the Book of the Law and of the Passover (marginal reference, and 2 Kings 23:23), but is not meant to apply to all the various reforms of Josiah as related in 2 Kings 23:4-20. The true chronology of Josiah’s reign is to be learned from 2Ch 34:3-8; 2 Chronicles 35:1. From these places it appear that at least the greater part of his reforms preceded the finding of the Book of the Law. He began them in the 12th year of his reign, at the age of 20, and had accomplishied all, or the greater part, by his 18th year, when the Book of the Law was found.
Shaphan is mentioned frequently by Jeremiah. He was the father of Ahikam, Jeremiah’s friend and protector at the court of Jehoiakim Jeremiah 26:24, and the grandfather of Gedaliah, who was made governor of Judaea by the Babylonians after the destruction of Jeruslem 2 Kings 25:22. Several others of his sons and grandsons were in favor with the later Jewish kings Jeremiah 29:3; Jeremiah 36:10-12, Jeremiah 36:25; Ezekiel 8:11. Shaphan’s office was one of great importance, involving very confidential relations with the king 1 Kings 4:3.