2Ch 2 Chronicles, chapter Second Book of Chronicles, chapter 30
And the king takes counsel, and his heads, and all the assembly in Jerusalem, to make the Passover in the second month, Exo 12:6; Exo 13:4; Num 9:11for they have not been able to make it at that time, for the priests have not sanctified themselves sufficiently, and the people have not been gathered to Jerusalem.