Then Hoshea the son of Elah made a conspiracy against Pekah the son of Remaliah and struck him down and put him to death and reigned in his place, in the twentieth year of Jotham the son of Uzziah.
The best days of the kingdom of Israel were while the government was in Jehu's family. In his reign, and the next three reigns, though there were many abominable corruptions and miserable grievances in Israel, yet the crown went in succession, the kings died in their beds, and some care was taken of public affairs; but, now that those days are at an end, the...
Commenting on 2 Kings 15:8-31
Hoshea the son of Elah made a conspiracy . . . and slew him--He did not, however, obtain possession of the kingdom till about nine or ten years after the perpetration of this crime [HALES]. in the twentieth year of Jotham--Jotham's reign lasted only sixteen years, but the meaning is that the reign of Hoshea began in the twentieth after the beginning of Jotham's reign.
Hoshea the son of Elah - in the twentieth year of Jotham - There are many difficulties in the chronology of this place. To reconcile the whole, Calmet says: "Hoshea conspired against Pekah, the twentieth year of the reign of this prince, which was the eighteenth after the beginning of the reign of Jotham, king of Judah.