David Livingstone

W. G. Blaikie says in his Life of Livingstone that when David Livingstone was sent as a student to preach at Sanford Rivers, he stood up in the pulpit and completely forgot what he was going to say. Although this incident would have signaled the end of public speaking for many, Livingstone knew he must not give up. When God called him to be a missionary, he was ready to go. Later he wrote, "I am still a very poor preacher and have a bad delivery; and some say that if they knew I was to preach, they would not enter the chapel."