2 Kings 15:30

Hoshea the son of Elah Josephus (Ant.IX. 13. 1) says Hoshea was a friend of Pekah. He is mentioned in the Assyrian inscriptions (Smith, Assyrian Discoveries, p. 285), and it appears from that record as if he had been set up by the Assyrian king. Perhaps Hoshea, having conspired and slain Pekah, put himself as a vassal under the protection of Assyria. The inscription speaks of the tribute which he was to pay to the Assyrians. Though the death of Pekah is here mentioned we have a further account of his attempts against Judah in the next chapter.

in the twentieth year of Jotham As Jotham is said below in verse 33 to have reigned only sixteen years, there must be some mistake in the numbers either here or there. The occurrence of such variations makes the task of fixing the chronology very difficult, and probably no satisfactory solution will be discovered, to the several questions which arise on this subject, until more is known of the contemporary history. If ever the annals of Assyria and Egypt be brought into trustworthy order, the points of contact with Jewish affairs will help to settle some dates and to clear up what seems now irremediably obscure