“And יהוה said unto him, What is that in thine hand? And he said, A rod.
And he said, Cast it on the ground. And he cast it on the ground, and it became a serpent; and Moses fled from before it.
And יהוה said unto Moses, Put forth thine hand, and take it (the serpent) by the tail. And he put forth his hand, and caught it, and it became a rod in his hand: That they may believe that יהוה אלהים Jehovah Elohim of their fathers, the Elohimאלהים of Abraham, the Elohimאלהים of Isaac, and the Elohimאלהים of Jacob, hath appeared unto thee.” – Exodus 4: 2-5
The Zohar states:
“This (serpent) refers to the rod of Elohim that was delivered into his hand. As it is written:
“And Moses said unto Yoshuah, `Choose for us Anashim אנשים, and go out, fight against Amalek עמלק: to-morrow I am standing on the top of the hill, and the rod (serpent) of Elohim אלהים in my hand.” – Exodus 17: 9
“And this (serpent) is the same rod that was created (when the sun rose for the first time in his spine) at the twilight of the Shabbat eve and was engraved with the Holy Name by a Divine Shaping.”
So, “The rod of Moses symbolizes also the serpent or tempter, who (as Satan) was the cause of the captivity of (the archetypes of) Israel (because of the bestial orgasm) .” – Zohar