Exodus 7:8-12 The Lord said to Moses and Aaron, “When Pharaoh says to you, ‘Perform a miracle,’ then say to Aaron, ‘Take your staff and throw it down before Pharaoh,’ and it will become a snake.”

So Moses and Aaron went to Pharaoh and did just as the Lord commanded. Aaron threw his staff down in front of Pharaoh and his officials, and it became a snake. 

Pharaoh then summoned wise men and sorcerers, and the Egyptian magicians also did the same things by their secret arts: Each one threw down his staff and it became a snake. But Aaron’s staff swallowed up their staffs.

1 Kings 17:2-6   Then the word of the Lord came to Elijah:  “Leave here, turn eastward and hide in the Kerith Ravine, east of the Jordan.  You will drink from the brook, and I have directed the ravens to supply you with food there.”

 So he did what the Lord had told him. He went to the Kerith Ravine, east of the Jordan, and stayed there.  The ravens brought him bread and meat in the morning and bread and meat in the evening, and he drank from the brook.