Does Moses have reason to fear? In the past it was said to Moses: who have made you ruler over us? (Exodus 2:14). Can’t Israel do the same now? But God has promised they will listen to your voice
(Exodus 3:18). Now Moses himself has to listen and obey.
1 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.’”