Then Moses answered, “But behold, they will not believe me or listen to my voice, for they will say, ‘The Lord did not appear to you.'” The Lord said to him, “What is that in your hand?” He said, “A staff.” – Exodus 4:1-2
A lot of doubt and a lot of fear. Especially, for a man who is encountering God for the first time. A man who most of his adult life was spent running in fear. After all, that’s why Moses retreated to Midian. Why should now be any different?