THE HOLY SPIRIT THE SANCTIFYING POWER IN CALVIN'S THOUGHT This work interprets the role of the Holy Spirit in sanctification according to John Calvin. The Study of Calvin focuses on the 1559 edition Institutes. The perspectives of Calvin's views explored are those of "the Christian life" and that of the Christian life as a life of "Grace and Gratitude." Calvin understood the Spirit as the power through which "the Christian life" comes to be, and the power through which such life is lived for the honor and glory of God- a life that pays gratitude to Him. Further, he understood the Spirit as the power bringing forth transformation into the "Image of God-IMAGO DEI" during the process. In Calvin's thought, therefore, the Holy Spirit is the power involved in the creation of " the Christian life" and the renewal of such life into the "Image of God."