The Lord said to Moses and Aaron,
"If the king demands that you prove yourselves by performing a miracle, tell Aaron to take his walking stick and throw it down in front of the king, and it will turn into a snake."
So Moses and Aaron went to the king and did as the Lord had commanded. Aaron threw his walking stick down in front of the king and his officers, and it turned into a snake.
Then the king called for his wise men and magicians, and by their magic they did the same thing.
They threw down their walking sticks, and the sticks turned into snakes. But Aaron's stick swallowed theirs.
The king, however, remained stubborn and, just as the Lord had said, the king would not listen to Moses and Aaron.