He qualifies the called

Jacob was a cheater, Peter had a temper, David had an affair, Noah got drunk, Jonah ran away from God ,Paul was a murderer, Gideon was insecure, Miriam was gossiper, Martha was a nerve wreck, Thomas was a doubter, Sarah was impatient, Elijah was depressed, Moses stuttered, Zaccheus was short, Abraham was old and Lazarus was dead. God does not call the qualified, He qualifies the called.