The purpose of this article is to interpret the last sentence of Dewey's “My Pedagogic Creed” which says “the teacher always is the prophet of the true God” on the basis of Dewey's theory of education. According to Dewey, human natural aptitude is expressed in the form of a babbling at the beginning, rather than being expressed externally as a completed form. Therefore, it is not easy to capture the meaning of the early human aptitude expressed in the form of a babbling, just as the babbling itself is not distinguished from a meaningless noise. The very first role that a teacher must perform in the place of education is to capture the student's spontaneous energy. The teacher, utilizing her or his subject knowledge, can predict the development of the primitive form of student's aptitudes. The second role of the teacher is to provide an appropriate educational environment so that the captured student's babbling can develop into a human language. The role of capturing an individual's aptitude and helping it to be realized in an individual's life can only be done by the teacher. Parents can not completely replace the role of the teacher, and it is almost impossible for an individual to discover her or his own natural aptitude. In terms of discovering and realizing the unique abilities inherent in humans, the teacher can be given the title of a prophet of the true God based on the traditional conception of God. And by keeping the active relationship between the student's present energy and its future outcome, the teacher is entitled to the honorable title of a prophet of the true God based on Dewey's conception of God.