1)
Why did the Torah need to insert "Milevad ha'Meisim al-D'var Korach", which took place the day before?
1.
It is needed for the calculation. Refer to 17:10:1:3.
Why did the Torah need to insert "Milevad ha'Meisim al-D'var Korach", which took place the day before?
It is needed for the calculation. Refer to 17:10:1:3.