Chronicles II 30:1

1 And Ezekias sent to all Israel and Juda, and wrote letters to Ephraim and Manasse, that they should come into the house of the Lord to Jerusalem, to keep the passover to the Lord God of Israel.

Chronicles II 30:1 Meaning and Commentary

Ver. 1. And Hezekiah sent to all Israel and Judah
Sent2 Chronicles 30:2

For the king had taken counsel, and his princes, and all the
congregation in Jerusalem
He and his nobles, and the great sanhedrim or senate of the nation, had consulted together: to keep the passover in the second month;
in the month Ijar, as the Targum, because they could not keep it in the first month, as it should have been kept, according to the law of God, for the reasons following.

Chronicles II 30:1 In-Context

1 And Ezekias sent to all Israel and Juda, and wrote letters to Ephraim and Manasse, that they should come into the house of the Lord to Jerusalem, to keep the passover to the Lord God of Israel.
2 For the king, and the princes, and all the congregation in Jerusalem, designed to keep the passover in the second month.
3 For they could not keep it at that time, because a sufficient number of priest had not purified themselves, and the people was not gathered to Jerusalem.
4 And the proposal pleased the king and the congregation.
5 And they established a decree that a proclamation should go through all Israel, from Bersabee to Dan, that they should come and keep the passover to the Lord God of Israel at Jerusalem: for the multitude had not done it lately according to the scripture.

The Brenton translation of the Septuagint is in the public domain.