Chronicles II 30:19

19 The good Lord be merciful with regard to every heart that sincerely seeks the Lord God of their fathers, and not according to the purification of the sanctuary.

Chronicles II 30:19 Meaning and Commentary

2 Chronicles 30:19

That prepareth his heart to seek God, the Lord God of his
fathers
Who was heartily desirous of worshipping God, and observing his ordinances, which had been enjoined their fathers, and they had kept; though Aben Ezra, as Kimchi observes, refers this to Hezekiah,

whose whole heart he directed, or prepared to seek the Lord
by prayer and supplication for everyone of the said persons:

though he be not cleansed according to the purification of the
sanctuary:
according to the ceremonial law, which the service of the temple required; since, though they were attended with a ceremonial impurity, had a moral purity, and their hearts were right with God.

Chronicles II 30:19 In-Context

17 For a great part of the congregation was not sanctified; and the Levites were to kill the passover for every one who could not sanctify himself to the Lord.

18 For the greatest part of the people of Ephraim, and Manasse, and Issachar, and Zabulon, had not purified , but ate the passover contrary to the scripture. On this account also Ezekias prayed concerning them, saying,

19 The good Lord be merciful with regard to every heart that sincerely seeks the Lord God of their fathers, and not according to the purification of the sanctuary.

20 And the Lord hearkened to Ezekias, and healed the people.

21 And the children of Israel who were present in Jerusalem kept the feast of unleavened bread seven days with great joy; and they continued to sing hymns to the Lord daily, and the priests and the Levites on instruments to the Lord.