Exodus 4:13,14

Send by whom thou wilt send By any but me. The anger of the Lord was kindled Even self-diffidence, when it grows into an extreme, when it either hinders us from duty, or clogs us in duty, is very displeasing to him. I know that he can speak well Moses excelled in wisdom and conduct, Aaron in eloquence. Such is the wise order of Providence. As in the human body each member has its different use and function, and all ministering to the good of the whole; so in the mystical body of Christ, God has dispensed different gifts to different members, and very seldom, if ever, gives all accomplishments to one; but to preserve a mutual dependance and relation, he distributes some to one and some to others, Romans 12:4.