Comentario sobre Exodo 4:23

ואמר אליך AND I HAVE SAID UNTO THEE, as a messenger of the Omnipresent God, שלח את בני LET MY SON GO,

הנה אנכי הורג את בנך בכורכך, even though when it comes to the period known as קץ הימים, the end of the days of this planet, G’d will cause the kind of upheaval which will result in all the nations calling G’d by His chosen name and they will all serve Him without reservations, (Tzefaniah 3,9) even then Israel will still be special inasmuch as it is “My son.” I relate to Israel as a father relates to his son, not as a master relates to his servant, even the most benign of masters. A servant’s loyalty or “love” for his master is based on his expectations of reward, or his fear of punishment, not so a son’s loyalty and love. An additional reason for My preference for Israel is the fact that it is My firstborn son, i.e. it is the first nation to accept My position as Creator, King, Master in this universe. At a time when all the other nations were still following their misguided theologies, only the Jewish people proclaimed Me exclusively as their G’d and lawgiver. (compare Micah 4,5).

If you keep refusing to release My firstborn, הנה אנכי הורג את בנך בכורך, “I am going to kill your firstborn.” G-d explains to Pharaoh that His system of meting out justice is based on the punishment fitting the crime. Rashi adds that here we find G-d already predicting that noncompliance will eventually result in the tenth plague.