2 Chronicles 30
1 Ref Then Hezekiah sent word to all Israel and Judah, and sent letters to Ephraim and Manasseh, requesting them to come to the house of the Lord at Jerusalem, to keep the Passover to the Lord, the God of Israel.
2 Ref For the king, after discussion with his chiefs and all the body of the people in Jerusalem, had made a decision to keep the Passover in the second month.
3 Ref It was not possible to keep it at that time, because not enough priests had made themselves holy, and the people had not come together in Jerusalem.