Exodus 4:10-14

4:10 Then Moses said to the Lord, “O my Lord, I am not an eloquent man, neither in the past nor since you have spoken to your servant, for I am slow of speech and slow of tongue.”

4:11 The Lord said to him, “Who gave a mouth to man, or who makes a person mute or deaf or seeing or blind? Is it not I, the Lord? 4:12 So now go, and I will be with your mouth and will teach you what you must say.”

4:13 But Moses said, “O my Lord, please send anyone else whom you wish to send!”

4:14 Then the Lord became angry with Moses, and he said, “What about your brother Aaron the Levite? I know that he can speak very well. Moreover, he is coming to meet you, and when he sees you he will be glad in his heart.

Matthew 14:30-31

14:30 But when he saw the strong wind he became afraid. And starting to sink, he cried out, “Lord, save me!” 14:31 Immediately Jesus reached out his hand and caught him, saying to him, “You of little faith, why did you doubt?”