Exodus Chapter 4, Verse 4
From BibleWiki
4: And the LORD said unto Moses, Put forth thine hand, and take
it by the tail. And he put forth his hand, and caught it, and
it became a rod in his hand:
4: And the Lord said to Moses, Stretch forth thine hand, and take hold of its tail: so he stretched forth his hand and took hold of the tail,
But at the bidding of God, Moses seized the serpent by the tail, and received his staff again as "the rod of God," with which he smote Egypt with great plagues. From this sign the people of Israel would necessarily perceive, that Jehovah had not only called Moses to be the leader of Israel, but had endowed him with the power to overcome the serpent-like cunning and the might of Egypt; in other words, they would "believe that Jehovah, the God of the fathers, had appeared to him." (On the special meaning of this sign for Pharaoh, see Ex 7:10.)

