Midrash su Isaia 33:3

With what did the angel smite them? R. Eliezer said: "With his hand, as it is said (Ex. 14, 31) And Israel saw that great hand which the Lord had shown, i.e., that which will take revenge on Sennacherib." R. Joshua said: "He smote them with his finger, is it is said (Ib. 8, 15) Then said the magicians unto Pharaoh, This is a finger of God; i.e., this is the finger which will take revenge on Sennacherib." And R. Eliezer b. R. Jose, the Galilean said: "The Holy One, praised be He! said to Gabriel: 'Is thy sickle [of death] polished?' And he answered: 'Sovereign of the Universe, it is polished and ready since the six days of the creation,' as it is said (Is. 21, 15) From the drawn sword, from the bent bow." R. Simon b. Jochai said: "That was the time when the fruit became ripe, and the Holy One, praised be He! said to Gabriel: "When thou wilt go to make the fruit ripe, thou shalt, by the way, attend to them,' as it is said (Ib. 28, 19) For morning by morning shall it pass by, by day and by night; and the mere understanding of the report shall cause terror." R. Papa said: "This is what people say: 'When thou passest by the door of thy enemy, make thyself seen'." According to others, the angel blew into their nostrils till they died, as it is said (Ib. 40, 24) When he breathed upon them, they withered. R. Jeremiah b. Abah said: "They died from the clapping of his hands as it is said (Ezek. 21, 22) I will strike my hands together, and I will cause my fury to be assuaged." And R. Isaac of Nafha said: "He uncovered their ears so that they heard the songs of the angel and died from it, as it is said (Ib. 33, 3) When thou liftedst thyself up nations were scattered."