“I have come down to deliver them from the hand of Egypt and to take them up from that land to a good and expansive land, to a land flowing with milk and honey, to the place of the Canaanites and the Hittites and the Emorites and the Perizzites and the Hivvites and the Yevusites” (Exodus 3:8). “I have come down to deliver them from the hand of Egypt…” – the Holy One blessed be He said to Moses: ‘I told their patriarch Jacob: “I will go down with you into Egypt and I will take you up…” (Genesis 46:4).
Now I have come down here to take his descendants up, as I said to Jacob their patriarch. To where will I take them up? To the place from which I took them, to the land about which I took an oath to their ancestors.’ That is what is written: “And to take them up from that land…” “And now, behold, the outcry of the children of Israel has come to Me and I have also seen the oppression that the Egyptians are oppressing them” (Exodus 3:9).
“And now, behold, the outcry of the children of Israel has come to Me,” – until now, their outcry has not come to Me, as the end that I said to Abraham had not yet arrived: “And [they] will serve them, and they will afflict them four hundred years” (Genesis 15:13). “Go now, and I will send you to Pharaoh, and take My people the children of Israel out of Egypt” (Exodus 3:10). “Go [lekha] now, and I will send you to Pharaoh” – Rabbi Elazar said: Lekha [ending with the letter heh] is emphatic, saying that if you do not deliver them there is no one else to deliver them.11The midrash is reading lekha, go, as a conjunction of lekh ata, go you.