Today's world continues to change, including the way people perceive sex problems. Some of the problems that arise are: What is meant by education? Sex in a world of sin? How is the Relationship of Sex Education as a Foundation of Christian Faith to the Doctrine of Holiness according to Reformed? The answer: (1) The Bible's view of sex education is God's work on humans since creation. (2) Sex is something sacred as God instituted marriage for the first time in Eden. (3) Sex education can be related to the doctrine of holiness as the foundation of Christian faith as follows: First, it is necessary to develop holiness education in schools, seminars and in churches in order to clarify the position of sexual sinfulness committed outside of marriage. Second, God-centered holiness becomes dependent only on God and not on humans. Third, the holiness modeled by Jesus becomes a figure that everyone can imitate so that everyone has a calling to live.
Keyword s: Sex education, sinfulness, holiness, reformed doctorate