And it came to pass in the fourth year of king Hezekiah, which was the seventh year of Hoshea son of Elah king of Israel, that Shalmaneser king of Assyria came up against Samaria, and besieged it.
723 the fourth year
2 Kings 18:1 Now it came to pass in the third year of Hoshea son of Elah king of Israel, that Hezekiah the son of Ahaz king of Judah began to reign.
2 Kings 17:4-6 And the king of Assyria found conspiracy in Hoshea: for he had sent messengers to So king of Egypt...
2 Kings 17:3 Against him came up Shalmaneser king of Assyria; and Hoshea became his servant, and gave him presents.
Hosea 10:14 Therefore shall a tumult arise among your people, and all your fortresses shall be spoiled...