2 Chronicles 30:10

SOME SPURN THE KING'S INVITATION; BUT MANY ACCEPTED

"So the posts passed from city to city through the country of Ephraim and Manasseh, even unto Zebulun: but they laughed them to scorn, and mocked them. Nevertheless certain men of Ashur and Manasseh and Zebulun humbled themselves, and came to Jerusalem. Also upon Judah came the hand of God to give them one heart, to do the commandment of the king and of the princes by the word of Jehovah."

The remnant of the northern tribes that had been left in the land by the kings of Assyria had, in the principal part, degenerated into paganism and were naturally resentful that Judah had been spared, because they were fully aware that Judah's sins against God were just as extensive as their own. They did not realize that God had humbled and destroyed their kingdom as an example of what would also eventually happen to Judah. It was not merely northern Israel that needed to return to God, but all Israel. Hezekiah did his best to bring the people back to God; and, for awhile, he succeeded; but as soon as his son Manasseh came to the throne, his reformation was quickly repudiated.