John Gill Commentary 2 Chronicles 30:24

"For Hezekiah king of Judah did give to the assembly for offerings a thousand bullocks and seven thousand sheep; and the princes gave to the assembly a thousand bullocks and ten thousand sheep: and a great number of priests sanctified themselves." — 2 Chronicles 30:24 (ASV)

For Hezekiah king of Judah did give to the congregation one
thousand bullocks, and seven thousand sheep
He separated them, as Kimchi interprets it, from his own herds and flocks; or out of his own substance, at his own expense purchased them; or lifted them up, as the word signifies, as heave offerings to the Lord; and gave them to the people for thank offerings to feast upon:

and the princes gave to the congregation one thousand bullocks, and ten
thousand sheep :
for the same purposes, following the king's example:

and a great number of priests sanctified themselves ;
besides those who had before, that they might be fit to offer this great number of sacrifices.