They ran out of priests qualified to slaughter all the Whole-Burnt-Offerings so their brother Levites stepped in and helped out while other priests consecrated themselves for the work. It turned out that the Levites had been more responsible in making sure they were properly consecrated than the priests had been.
Published by permission. Originally published by NavPress in English as THE MESSAGE: The Bible in Contemporary Language copyright 2002 by Eugene Peterson. All rights reserved.
(The Message Bible Online)