6 and King Solomon and the entire assembly of Israel that had gathered about him were before the ark, sacrificing so many sheep and cattle that they could not be recorded or counted.

Read 2 Chronicles 5:6 Using Other Translations

Also king Solomon, and all the congregation of Israel that were assembled unto him before the ark, sacrificed sheep and oxen, which could not be told nor numbered for multitude.
And King Solomon and all the congregation of Israel, who had assembled before him, were before the ark, sacrificing so many sheep and oxen that they could not be counted or numbered.
There, before the Ark, King Solomon and the entire community of Israel sacrificed so many sheep, goats, and cattle that no one could keep count!