2 Chronicles 30:1-2

And Hezekiah sent to all Israel and Judah, and wrote letters also to Ephraim and Manasseh, that they should come to the house of Jehovah at Jerusalem, to keep the passover unto Jehovah, the God of Israel. For the king had taken counsel, and his princes, and all the assembly in Jerusalem, to keep the passover in the second month.