The life which Marshall Keeble lived was strengthened by his preaching. He kept himself above reproach. His “hand and heart” were as clean and pure as the driven snow. Brother Keeble knew there were no non-essential commands. He knew that if God put the command in the Bible, it was up to man to learn it and to take time to do it. He did. Never was he concerned about someone who might think him “over zealous, over religious, or over aggressive” for the cause of Christ. The Christian’s duty was to “exceed the righteousness of the scribes and the Pharisees,” and Brother Keeble said the word “exceed” means that “we’ve got to beat ’em.”
--His Hand and Heart, by Willie Cato, a biography of Marshall Keeble