1)
Here the Torah writes that B'nei Yisrael tested Hashem. Why does it then write in Vezos ha'Berachah Devarim, 34:7, that Hashem tested the tribe of Levi at Mei Merivah?
1.
Rashi (in Devarim 34:7): Levi's test was not to complain with the other complainers.