Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[263] When the king had said this, the priests opened the temple; and when they had set in order the vessels of God, and east out what was impure, they laid the accustomed sacrifices upon the altar. The king also sent to the country that was under him, and called the people to Jerusalem to celebrate the feast of unleavened bread, for it had been intermitted a long time, on account of the wickedness of the forementioned kings. He also sent to the Israelites, and exhorted them to leave off their present way of living, and return to their ancient practices, and to worship God, for that he gave them leave to come to Jerusalem, and to celebrate, all in one body, the feast of unleavened bread; and this he said was by way of invitation only, and to be done of their own good-will, and for their own advantage, and not out of obedience to him, because it would make them happy. But the Israelites, upon the coming of the ambassadors, and upon their laying before them what they had in charge from their own king, were so far from complying therewith, that they laughed the ambassadors to scorn, and mocked them as fools: as also they affronted the prophets, which gave them the same exhortations, and foretold what they would suffer if they did not return to the worship of God, insomuch that at length they caught them, and slew them; nor did this degree of transgressing suffice them, but they had more wicked contrivances than what have been described: nor did they leave off, before God, as a punishment for their impiety, brought them under their enemies: but of that more hereafter. However, many there were of the tribe of Manasseh, and of Zebulon, and of Issachar, who were obedient to what the prophets exhorted them to do, and returned to the worship of God. Now all these came running to Jerusalem, to Hezekiah, that they might worship God [there].