Rashi tells us that the Egyptian astrologers had difficulty ascertaining whether the savior of Klal Yisroel would be an Egyptian or a Jew, and for this reason Pharaoh, out of an abundance of caution, decreed that all boys born, even Egyptians, be drowned on that particular day. (1:22)
This suggests that the Egyptian astrologers were unclear or unsure of the signs they were seeing in the stars. We do not find elsewhere that they were aware of uncertainty about their insights – why was this one hard for them to figure out?
Basia bas Pharaoh raised Moshe. (2:10). The gemoro (Sanhedrin 19b) says that one who raises an orphan child is like that child’s natural parent. In fact one of the proofs the gemoro uses to support this idea is a pasuk in Divrei Hayamim I (Ch 4) describing Basia bas Pharaoh as having given birth to Moshe; she is so described because she raised him.
Perhaps this was the source of the astrologers’ mindset. They were not confused; they were right on target in what they perceived – Moshe Rabbenu in fact was the product of two upbringings, one Jewish (natural) and one Egyptian (adopted). [As an aside, it is always fascinating to dwell upon the notion that the greatest Jewish leader was raised in a non-Jewish home. A midrash says that, like Moshe, Moshiach will come from the Edom culture he eventually will overturn.]
Similarly, Rashi says in Parshas Vayeshev (39:1) that the wife of Potiphar understood astrologically that either she or her daughter was destined to bear Yosef’s children. Yet Chazal say (Maseches Sofrim 21:9) that Potiphar’s daughter (who did become Yosef’s wife) was the daughter of Dinah who was adopted by Potiphar – why would there be an astrological reality to this girl being Potiphar’s daughter, given that she was ‘merely’ adopted? Rather, an adopted child is like a natural child, and not just down here on earth but even in the stars and in the essence of the relationship.
Gal Einai, Copyright © 2006 by Gedalia Litke and Torah.org