2 Chronicles 29:33

And the number of the burnt offerings, which the congregation brought, was threescore and ten bullocks, an hundred rams, and two hundred lambs: all these were for a burnt offering to the LORD.

But the priests were too few, so that they could not flay all the burnt offerings: wherefore their brethren the Levites did help them, till the work was ended, and until the other priests had sanctified themselves: for the Levites were more upright in heart to sanctify themselves than the priests.