Another interesting point learned from Parshat Bo is about prophecy. Other than the Prophet Yechezkel who received his prophecy in Chutz L’Aretz at the River Kefar, Egypt was a place where prophecy was received.
Moshe and Aharon had to go outside the city to receive prophecy concerning the new month, and making Nissan the first of the month’s of the Jewish calendar.
It was inappropriate to receive the word of G-d in a place of טומאה, impurity. When the Beit Hamikdash stood and there was holiness in the Land, that is when prophecy flourished.
Not only did the prophets need to be on a high level in order to receive prophecy, but the place of prophecy also needed to be holy.