2 Chronicles 29:34

But the priests were too few, so that they could not skin all the burnt offerings. Therefore their brothers the Levites helped them until the work was ended, and until the priests had sanctified themselves, for the Levites were more upright in heart to sanctify themselves than the priests.

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.