Exodus 4:1 - 3
KJV - 1 And Moses answered and said, But, behold, they will not believe me, nor hearken unto my voice: for they will say, The LORD hath not appeared unto thee. 2 And the LORD said unto him, What is that in thine hand? And he said, A rod.
For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.