You are all children of the Most High

Shelah haKadosh, Parshas Va'era

Moshe Rabbeinu so to speak became Elokim and through him YKVK is transmitted...and the verse states "אלקים אתם" ("you are Elokim") in the plural because Moshe Rabbeinu includes all 600,000 [root Jewish souls] because he is equal to all of Yisroel and בני עליון כולכם ("you are all children of the Most High") for you are the nation of Yisroel and you were suited to be "children of the most High", namely the heavenly host, and Moshe Rabbeinu would be over you like Elokim is over the heavenly host.