Matthew Henry on 2 Chronicles 30:13-20
The time appointed for the passover having arrived, a very great congregation came together upon the occasion, Ch2 30:13. Now here we have,
I. The preparation they made for the passover, and good preparation it was: They took away all the idolatrous altars that were found, not only in the temple, but in Jerusalem, Ch2 30:14. Before they kept the feast, they cast out this old leaven. The best preparation we can make for the gospel passover is to cast away our iniquities, our spiritual idolatries.
II. The celebration of the passover. In this the people were so forward and zealous that the priests and Levites blushed to see themselves out-done by the commonalty, to see them more ready to bring…
Read the whole note in the consoleJamieson-Fausset-Brown on 2 Chronicles 30:20
the Lord . . . healed the people--We imagine the whole affair to have been the following: In consequence of their transgressions they had cause to fear disease and even death (Lev 15:31). Hezekiah prayed for the nation, which was on the point of being diseased, and might therefore be regarded as sick already [BERTHEAU].
Adam Clarke on 2 Chronicles 30:18
A multitude of the people - had not cleansed themselves - As there were men from Ephraim, Manasseh, Issachar, and Zebulun, they were excusable, because they came from countries that had been wholly devoted to idolatry.
The good Lord pardon every one - "The Lord, who is good, have mercy on this people who err." - T.
John Gill on 2 Chronicles 30:20
And the Lord hearkened to Hezekiah,.... Heard his prayer, and accepted of it, and granted what he desired:
and healed his people; that is, forgave their sins, as Kimchi interprets it; forgiveness being expressed by healing, for which he refers to Psalm 41:4 to which may be added Psalm 103:3 and which was known either by a prophet sent to declare it, or by not punishing them for their offence.
Tyndale Open Study Notes