“And Moses took his wife and his sons, and set them upon an ass, and he returned to the land of Egypt: and Moses took the rod of God in his hand.” Ex. 4:20
In the backside of the wilderness, the stick in Moses hand was a staff for shepherding sheep. When the call of God came upon Moses, that staff became the rod of God. If a mere shepherds staff can become the rod of God, imagine what you could become for God.