Musar su Salmi 60:78

The two hundred and fifty men whose intentions were honorable since they wanted to elevate themselves spiritually, also spoke rebelliously despite their good intentions. We must not be too surprised at this, since we find in Gittin 57a, in connection with reports of the war that resulted in the destruction of Jerusalem and the Holy Temple, that there was a man called Bar Deroma who could jump a mile and a half and kill while jumping. The Roman Caesar, realising the danger this man represented to his army, placed his crown on the ground, and prayed to G–d (our G–d) not to deliver his army into the hands of this man. At that moment this Bar Deroma caused his own downfall by quoting a verse from Psalms 60,12: "Have You O G–d not forsaken us? You do not march with our armies!" When the Talmud asks that David had been guilty of similar statements and nothing had happened, the answer given is that when David said this it was a question, whereas in the case of Bar Deroma it was said as a statement. What happened with the two hundred and fifty men was similar. They were part of the ויקומו, the rebellious attitude, though their intent was different from that of Korach. We can compare them to a student who stands before his teacher in a very upright position, not deferentially. It was their demand that the whole congregation should be holy, that the mantle of holiness should not be restricted to selected individuals. They justified their demand by saying that the whole nation had been found worthy to be addressed directly by G–d at the Revelation at Mount Sinai. By using the singular when saying אנכי ה'אלוקיך, G–d supposedly included everybody as being part of the same category. Otherwise He could have said אלוקיכם. This proved that G–d is indeed בתוכנו, "amongst us all." When G–d promises the Jewish people good fortune in the future in Leviticus 26,12, He says "והתהלכתי בתוככם," since He refers to a period when the world will be full of the knowledge of G–d. That is the period of which Isaiah 11,9, has said: "The earth will be filled with knowledge of G–d." These men were eager to cleave to G–d, as had been the sons of Aaron when they brought the incense in the Holy of Holies and who had died as a result. Precisely the same happened to the two hundred and fifty men.