We read in our Parasha (23:1-4), that:’Hashem spoke to Moshe, saying:’Speak to Bnei Israel and say to them: אלה מועדי ה׳: These are My appointed festivals that you are to designate as holy ...
Hashem made a mockery of Pharoah and the Egyptians, to obviate any possibility of a mistaken impression that there was that ...