Most Relevant Verses
Because there weren't enough priests, they were unable to prepare all the burnt offerings until other priests came forward after having consecrated themselves, so their descendant of Levi relatives assisted them until the services were complete. (The descendants of Levi had been more conscientious in consecrating themselves than had been the priests.)
But you are a chosen people, a royal priesthood, a holy nation, a people to be his very own and to proclaim the wonderful deeds of the one who called you out of darkness into his marvelous light.
but they had been unable to celebrate it then because not enough priests had consecrated themselves and the people had not yet been gathered together in Jerusalem.