(Devarim, Ibid. 11) "In all the signs and the wonders which the L-rd sent him to do in the land of Egypt, to Pharaoh, and to all of his servants, and to all of his land.": "to Egypt": by itself; "to Pharaoh": by himself; "and to all of his servants": by themselves.
(Ibid. 12) "and of all the mighty hand": This is the plague of the first-born. "and of all the great awe": This is the splitting of the Red Sea.
R. Elazar says: "in all the signs and the wonders": In Egypt and at the Red Sea. And whence do we derive (what occurred at) Mount Sinai? From "and in all the strong hand." And whence do we derive even (what occurred in) the desert? From "and in all the great awe." And whence do we derive even the breaking of the tablets? It is written elsewhere (Ibid. 9:17) "and I broke them before your eyes," and here, "that Moses wrought before the eyes of all of Israel."