מדרש אויף איוב 34:20

Another matter, “it was at midnight” – Elihu said: “In a moment they die, at midnight” (Job 34:20). When they died, everyone began screaming, as it is stated: “Pharaoh rose during the night, he, all his servants, and all of Egypt, [and there was a great cry in Egypt]” (Exodus 12:30). Immediately, [Pharaoh] “called for Moses and Aaron” (Exodus 12:31). Moses said to Him: ‘What does Pharaoh seek? Who comes to whom, you to me or me to you?’ [Pharaoh] said to him: ‘Please, “rise, depart from the midst of my people”’ (Exodus 12:31). Why? “He is wise in heart, and mighty in strength; who has challenged Him and prospered?” (Job 9:4).

Rabbi José said: All that night the Israelites were eating and drinking, rejoicing and taking wine and praising their God with a loud voice, whilst the Egyptians were crying with a bitter soul, because of the plague which came upon them suddenly, as it is said, "And there was a great cry in Egypt; for there was not a house where there was not one dead" (Ex. 12:80).