2 Chronicles 30:1-2

King Hezekiah now sent word to all Israel and Judah, and he wrote letters of invitation to the people of Ephraim and Manasseh. He asked everyone to come to the Temple of the LORD at Jerusalem to celebrate the Passover of the LORD, the God of Israel. The king, his officials, and all the community of Jerusalem decided to celebrate Passover a month later than usual.