Divrey Hayamim Bais 30:19

19 Everyone that prepareth his lev to seek HaElohim, Hashem Elohei Avotav, though he be not tahor according to the taharat HaKodesh.

Divrey Hayamim Bais 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.

Divrey Hayamim Bais 30:19 In-Context

17 For there were rabbim in HaKahal that were not set apart as kodesh; therefore the Levi’im had the charge of the shechitah (ritual slaughter) of the Pesachim for every one that was not tahor and therefore could not set them apart as kodesh unto Hashem.

18 For most of HaAm, even many of Ephrayim, and Menasheh, Yissakhar, and Zevulun, had not made themselves tahor, yet did they eat the Pesach contrary to what was written. But Chizkiyah davened for them, saying, May Hashem Hatov grant kapporah to

19 Everyone that prepareth his lev to seek HaElohim, Hashem Elohei Avotav, though he be not tahor according to the taharat HaKodesh.

20 And Hashem paid heed to Chizkiyah, and healed HaAm.

21 And the Bnei Yisroel that were present at Yerushalayim kept the Chag HaMatzot shivat yamim with simchah gedolah; and the Levi’im and the Kohanim praised Hashem yom b’yom, singing with loud instruments unto Hashem.