2 Kings 17:6
In the ninth year of Hoshea the king of Assyria took Samaria, and carried Israel away into Assyria, and placed them in Halah and in Habor by the river of Gozan, and in the cities of the Medes. In the ninth year of Hoshea the king of Assyria took Samaria, and carried Israel away into Assyria, and placed them in Halah and in Habor by the river of Gozan, and in the cities of the Medes.
The hosts of Assyria under Shalmaneser invested Samaria, and in the siege that followed multitudes perished miserably from hunger and disease as well as by the sword until the city and the nation fell. The broken remnant of the ten tribes of the northern kingdom was carried away captive into exile and scattered among the provinces of the Assyrian realm and among the nations. That fall came about two years after Hezekiah's Passover invitation.
It had already taken place by the time Hezekiah became king of Judah, only a few years into his reign, in its earlier part, while Jerusalem was being fortified and its defenses strengthened. It occurred during the lifetime of Isaiah, who was of the royal line and was called as a young man to the prophetic mission near the close of Uzziah's reign, when Jotham was already bearing many of the burdens of state. It came through apostasy and rebellion that invited the judgments of God, hastened by the evils recently denounced by Hosea and Amos, which were also fast corrupting the kingdom of Judah.
At a time of peculiar peril, when divine protection was being removed from the southern kingdom and Assyrian forces were threatening Judah and about to overspread the land, the fate of Israel stood as a warning. The fall left Judah and Jerusalem close to Assyrian power and exposed them to the danger of another Assyrian invasion and attack. The defeat led surrounding peoples to question the power of Israel's God. The Assyrians' success emboldened the Ninevites to reject Jonah's message and oppose Heaven's purposes.