2 Kings 18:9

It happened in the fourth year of King Hezekiah, that [is,] the seventh year of Hoshea the son of Elah king of Israel, Shalmaneser king of Assyria came against Samaria and laid siege against her.

2 Kings 17:3-23

Shalmaneser the king of Assyria came up against him, and Hoshea became his vassal and paid tribute to him.

2 Kings 18:1

It happened in the third year of Hoshea the son of Elah king of Israel, that Hezekiah the son of Ahaz king of Judah became king.

Hosea 10:14

The tumult of war will rise up against your people, and all your fortresses will be destroyed, as Shalman destroyed Beth-arbel; on the day of war mothers were dashed to pieces with [their] children.

Treasury of Scripture Knowledge

Summary

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.

The fourth year

General references

Bible References

The fourth year

2 Kings 18:1
It happened in the third year of Hoshea the son of Elah king of Israel, that Hezekiah the son of Ahaz king of Judah became king.
2 Kings 17:4
But the king of Assyria found treachery in Hoshea, for he had sent messengers to So king of Egypt, and he did not offer tribute to the king of Assyria as [he had] year after year; so the king of Assyria arrested him, and confined him [in] a house of imprisonment.

General references

Ezekiel 23:9
Therefore I gave her into the hand of her lovers, into the hand of the {Assyrians} {after whom she lusted}.