Question: If Abraham was commanded to circumcise his descendants on the eighth day, why do Arabs – who claim to descend from Abraham through Yishmael – wait until their children are 13 to circumcise them? I am aware that this is a matter of little consequence to our people. Nevertheless, this inconsistency is one that piques my curiosity.
Rashi in Shabbos 9b writes that the reason why the tefillah of Ma’ariv is a reshus is because it was instituted corresponding to the burning of the eimurim from the korbanos – which was performed at night.
It almost sounds as if Hashem is saying, “I have to keep Yaakov from getting too comfortable; otherwise he will forget Me. I can’t promise him sustenance because then he won’t need Me. He won’t write. He won’t call. He won’t love Me anymore.”