Wyjścia 6:13 Midrasz: Sifra, Midrash Tanchuma, Mekhilta DeRabbi Yishmael & Shemot Rabbah

1) "And He called to Moses and the L–rd spoke to him, etc." "to him" — to exclude Aaron. R. Yehudah b. Betheira said: Thirteen dibroth (accompanied by a command) were stated in the Torah to Moses and Aaron, and, corresponding to them, thirteen limitations, to teach us that they were not spoken to Aaron, but to Moses, to tell them to Aaron. (The dibroth: 1) [Shemoth 6:13]; 2) [Shemoth 7:8]; 3) [Shemoth 9:8]; 4) [Shemoth 12:1]; 5) [Shemoth 12:43]; 6) [Vayikra 11:1]; 7) [Vayikra 13:1]; 8) [Vayikra 14:33]; 9 [Vayikra 15:1]; 10 [Bamidbar 2:1]; 11 [Bamidbar 4:1]; 12 [Bamidbar 4:18]; 13) [Bamidbar 19:2].)

He commanded them, saying; “Thus shall you say unto my lord Esau” (Gen. 32:5). R. Judah the son of Simon began the discussion with the verse: As a troubled fountain, and a corrupted spring, so is a righteous man that giveth way before the wicked (Prov. 25:26). That is to say, the righteous man is like a troubled fountain and a corrupted spring when he demeans himself before the wicked. Thus shall you say unto my lord Esau. Jacob called Esau my lord, for the Torah teaches that one must be respectful toward the government (those in power). R. Ishmael said: Observe that Scripture says: And the Lord spoke unto Moses and unto Aaron, and gave them a charge unto the children of Israel and unto Pharaoh, king of Egypt (Exod. 6:13).⁴God refers to Pharaoh as king to demonstrate the duty to honor the one in power. He did so to teach them to be respectful toward the government (those in power).

R. Yehudah b. Betheira says: It is written (Exodus 6:9) "And they would not hearken to Moses (as to G–d's delivering them), for shortness of spirit, etc." Now is there anyone who is given glad tidings and does not rejoice? (viz. Jeremiah 20:14) "A son has been born to you — Rejoice him!" His Master is freeing him from bondage and he does not rejoice? What, then, is the intent of "And they would not hearken to Moses, etc."? It was difficult for them to abandon their idolatry, viz. (Ezekiel 20:7) "And I said to them (in Egypt): Let every man cast away the detestations of his eyes and not defile himself with the idols of Egypt." This is the intent of (Exodus 6:13) "And the L–rd spoke to Moses and to Aaron, and He charged them to the children of Israel. He charged them to abandon idolatry.