Derasha on Bo 12:1 — Torah Temimah note 1

English: “Hashem said to Moshe and to Aharon” — I might think the speech was to Aharon and to Moshe; therefore it says, “On the day Hashem spoke to Moshe in the land of Egypt” — the speech was to Moshe and not to Aharon. If so, why say “and to Aharon”? To teach that just as Moshe was included in the divine communications, so Aharon was included in the divine communications.