Exodus 6:2

6:2 God spoke to Moses and said to him, “I am the Lord.

Exodus 6:6

6:6 Therefore, tell the Israelites, ‘I am the Lord. I will bring you out from your enslavement to the Egyptians, I will rescue you from the hard labor they impose, and I will redeem you with an outstretched arm and with great judgments.

Exodus 6:29

6:29 he said to him, “I am the Lord. Tell Pharaoh king of Egypt all that I am telling you.”