Exodus 4:1
The Source of Sufficiency
4:1 Moses answered again, “And if they do not believe me or pay attention to me, but say, ‘The Lord has not appeared to you’?”
Exodus 6:12
6:12 But Moses replied to the Lord, “If the Israelites did not listen to me, then how will Pharaoh listen to me, since I speak with difficulty?”
Exodus 10:28
10:28 Pharaoh said to him, “Go from me! Watch out for yourself! Do not appear before me again, for when you see my face you will die!”