224. There are five groups in the mixed multitude. These are the Nefilim (fallen), the Giborim (mighty), the Anakim (giants), the Refaim (shades) and the Amalekites. Because of them, the small Hei fell from its place, NAMELY FROM BINAH. Bilaam and Balak come from the side of Amalek, because if you remove the letters Am from Bilaam and the letters Lak from Balak, you are left with Babylon (Heb. Bavel). "Therefore is the name of it called Babylon; because Hashem did there confound (Heb. balal) the language of all the earth" (Beresheet 11:9).
349. When the Holy One, blessed be He, had foreseen three sinful generations - namely, the generation of Enosh, the generation of the Flood and the generation of the Tower of Babylon - he hid THIS LIGHT to prevent them from using it. The Holy One, blessed be He, gave it to Moses, who used it during the three months left to complete his period of pregnancy, AS HE WAS BORN AFTER SIX MONTHS AND ONE DAY. This is why it is written: "She hid him three months" (Shemot 2:2).