Another interpretation: For whose sake did the Holy One blessed be He reveal Himself? It was for Moses’s sake. Rabbi Nissim said: It is analogous to a priest who had a fig orchard, and in that orchard there was a grave that had been plowed over.48A priest is forbidden to become ritually impure through contact with a dead body. In this case, since it is uncertain whether there are bones in the soil, the priest is prohibited from entering the orchard.
He wanted to eat figs. He said to someone: ‘Go tell the sharecropper that the owner of the orchard says to you to bring him two figs.’ He went and told him that. The sharecropper replied to him: ‘Who is the owner of the orchard?
Go back to work.’ The priest said to him: ‘I will go to the orchard.’ They said to him: ‘You are going to an impure place.’ He said to them: ‘Even if there are one hundred sources of impurity there, I will go, and my emissary will not be disgraced.’
So, when Israel was in Egypt, the Holy One blessed be He said to Moses: “Go and I will send you to Pharaoh” (Exodus 3:10). He went, and he [Pharaoh] said to him: “Who is the Lord that I should heed His voice [to let Israel go]? I do not know the Lord” (Exodus 5:2); “go to your burdens” (Exodus 5:4). The Holy One blessed be He said: I will go to Egypt, as it is stated: “A prophecy of Egypt: [Behold, the Lord is riding upon a swift cloud and is coming to Egypt]” (Isaiah 19:1).
The ministering angels said to Him: ‘You are going to Egypt, to a place of impurity?’ He said to them: ‘I will go, and My emissary Moses will not be disgraced.’ That is what is written: “The Lord spoke to Moses and to Aaron in the land of Egypt, saying.”