Exodus 4:2

4:2 The Lord said to him, “What is that in your hand?” He said, “A staff.”

Exodus 4:17

4:17 You will also take in your hand this staff, with which you will do the signs.”

Exodus 17:9

17:9 So Moses said to Joshua, “Choose some of our men and go out, fight against Amalek. Tomorrow I will stand on top of the hill with the staff of God in my hand.”

Numbers 20:8-9

20:8 “Take the staff and assemble the community, you and Aaron your brother, and then speak to the rock before their eyes. It will pour forth its water, and you will bring water out of the rock for them, and so you will give the community and their beasts water to drink.”

20:9 So Moses took the staff from before the Lord, just as he commanded him.