Exodus 7:8-10 Ex. 7:8-10
8 And the LORD spake unto Moses and unto Aaron, saying, 9 When Pharaoh shall speak unto you, saying, Shew a miracle for you: then thou shalt say unto Aaron, Take thy rod, and cast it before Pharaoh, and it shall become a serpent. 10 And Moses and Aaron went in unto Pharaoh, and they did so as the LORD had commanded: and Aaron cast down his rod before Pharaoh, and before his servants, and it became a serpent.
Nehemiah 9:10 Neh. 9:10
And shewedst signs and wonders upon Pharaoh, and on all his servants, and on all the people of his land: for thou knewest that they dealt proudly against them. So didst thou get thee a name, as it is this day.
(Relation)