Prophets declare their weakness

I'm noticing a pattern that the Lord comforts them and gives them prophecies regarding their future work.

• Moses
  • Exodus 3:11 - "Who am I?" that should go before Pharoah
  • Exodus 4:1 - "They will not believe me, nor hearken unto my voice"
  • Exodus 4:10 - "I am not eloquent … but I am slow of speech, and of a slow tongue", neither before or after you ordained me
• Isaiah 6:5 - "I am a man of unclean lips"
• Jeremiah 1:4-10 - "I cannot speak: for I am a child"
• Ether 12:23-25 - Moroni, "the Gentiles will mock at these things because of our weakness in writing"
• Luke 5:8 - Peter, "Depart from me; for I am a sinful man, O Lord."