Midrasch zu Schemot 10:28

Why did Pharaoh and his servants approach him, saying: Get you? The time Pharaoh told him: Get thee from me, see my face no more (ibid. 10:29), he (Moses) insisted: But we shall not leave until all these servants shall come down unto me (ibid. 11:9), to escort us from this place. This verse indicates that Moses paid homage to royalty, since he did not say to him: “You and all your servants.” In fact, the Holy One, blessed be He, had previously charged Moses and Aaron to be respectful to royalty, as it is said: And the Lord spoke unto Moses and Aaron, and gave them a charge unto the children of Israel, and unto Pharaoh king of Egypt (ibid. 6:13). Joseph was respectful to royalty when he said: It is not in me; God will give Pharaoh an answer of peace (Gen. 41:6). Jacob was respectful to royalty; and Israel strengthened himself, and sat upon the bed (ibid. 49:2). Elijah paid homage to royalty, as is said: And the hand of the Lord was on Elijah (I Kings 18:46). Hananiah, Mishael, and Azariah also were respectful to royalty, and so was Daniel.

"And it was in the middle of the night" (Exodus 12:29) - this is [the meaning of] what is written (Isaiah 44:26), "He fulfills the word of His servant and completes the counsel of His messengers:" Rabbi Abahu said, "'He fulfills the word of His servant' - this [refers to] Moshe as it is stated (Numbers 12:7), 'Not so My servant Moshe.'" And how is it that He fulfilled it? Rather, when He brought the plague of darkness upon them, Pharaoh began to cry out (Exodus 10:24), "Go and serve the Lord, but your sheep and cattle must stay." Moshe said to him, "Upon your life! 'And also our livestock we will take, not one hoof will remain' (Ibid. 26)." What is [meant by] a hoof? Even an animal that belongs completely to an Egyptian and has one hoof that belongs to a Jew, [Moshe] will not leave. "Since from them shall we take" (Ibid.) - after he said, "from them shall we take," he went back and said "and we do not know with what we will serve the Lord." He said to him, "If with you, who are flesh and blood, [and] people die if they transgress your commands; [nonetheless] if you put out a proclamation in front of you and you say, collect this and that for me, the world can stand in front of you [and fulfill your proclamation]; but with us, perhaps God will say to us, 'sacrifice a sacrifice [that includes all of the sacrifices] of two hundred and ten years.'" That is [what is meant by] "and we do not know." Pharaoh said to him, "Until when will you enter here? 'Go away from me; guard yourself, do not see my face again!' (Ibid. 28)" Moshe said [back] to him, "you have spoken well; 'I will not see your face again.'" The Holy One, blessed be He, said, "What is still required for me? To inform Pharaoh of one plague." Immediately, He went into the palace of Pharaoh for Moshe - who said to [Pharaoh], "I will not see your face again" - so that he would not be found to be a fabricator. And you find that the Holy One, blessed be He, did not speak with Moshe in the house of Pharaoh except for that time. From where [do we know this]? As it is stated (Exodus 9:29), "When I leave the city, I will raise my hands to the Lord;" and now the Holy One, blessed be He, hastened and spoke with Moshe, as it is stated (Exodus 11:1), "still one plague will I bring upon Pharaoh, etc." Once Moshe heard [this], he rejoiced and became great, as it is stated, (Ibid. 3) "and also the man, Moshe, was very great." He begin to cry out in public (Ibid. 4), "'so did the Lord say, "at the middle of the night."' You have spoken well, 'I will not see your face again.' I, myself, will not come again to you, but rather you will come to me; and your general that is standing with you - and he is your head officer - and all of these [in] your palace retinue will come to me with you and request of me - and bow down to me - that we should leave from here;" as it is written (Ibid. 8), "And all of your servants will come down to me and bow down to me saying" - he did not want to say, 'and you will bow down to me' because of the honor of the king. When the middle of the night arrived, as Moshe said; immediately, "And it was the middle of the night and the Lord smote every firstborn." Hence, "He fulfills the word of his servant. And completes the counsel of His messengers" - that He made a counsel (agreement) with Avraham because of this thing. When? When the kings came and he pursued them. The Holy One, blessed be He, said to him, "It is enough for you until the middle of the night - come, let us split the night, you and I;" as it is stated, "And he divided against them at night (understood here as 'and He divided the night for them')." When the time came, he completed his counsel. That is [the meaning of] "And it was in the middle of the night." Thus is it written, "And completes the counsel of His messengers."