Simpson's disciplined upbringing and his natural genius made him a most effective communicator of the Word of God. He preached a unique gospel of Jesus which became known as the Fourfold Gospel: "Jesus our Savior, Sanctifier, Healer, and Coming King". The Fourfold Gospel is symbolized in the logo of the C&MA: the Cross (Savior), the Laver (Sanctifier), the Pitcher (Healer), and the Crown (Coming King). He came to his special emphasis in ministry through his absolute Christ-centeredness in doctrine and experience.