10
So Moses and Aaron came to Pharaoh, and thus they did just as the Lord had commanded; and Aaron threw his staff down before Pharaoh and his servants, and it abecame a serpent.
a
Exodus 4:3, Exodus 7:9
Exodus 4
3
Then He said, "Throw it on the ground." So he threw it on the ground, and ait became a serpent; and Moses fled from it.
Exodus 7
9
"When Pharaoh speaks to you, saying, 'aWork a miracle,' then you shall say to Aaron, 'bTake your staff and throw it down before Pharaoh, that it may become a serpent.'"