2 Chronicles 30:2-5

2For the king and his leaders and all the assembly in Jerusalem had agreed to keep the Passover in the second month.

3For they could not keep it at the regular time, because a sufficient number of priests had not consecrated themselves, nor had the people gathered together at Jerusalem.

4And the matter pleased the king and all the assembly.

5So they resolved to make a proclamation throughout all Israel, from Beersheba to Dan, that they should come to keep the Passover to the Lord God of Israel at Jerusalem, since they had not done it for a long time in the prescribed manner.