Rabi Levi taught that the discussion of how to purify the camp in Numbers 5 : 1 -- 4 was one of eight passages given to Moses on the day that the Tabernacle was erected .
The people needed to implement one immediately .
Rabi Levi taught that the discussion of how to purify the camp in Numbers 5 : 1 -- 4 was one of eight passages given to Moses on the day that the Tabernacle was erected , because the people needed to implement them immediately .