'Staff Of God' in the Bible

So Moses took his wife and his sons, and caused them to ride upon the ass, and he returned to the land of Egypt, - and Moses took the staff of God in his hand.

And Moses said unto Joshua - Choose for us men, and go forth, fight with Amalek, - to-morrow, am, I, stationing myself upon the top of the hill, with the staff of God in my hand.