With regard to the implementation of the first principle of Indonesia's national ideology Pancasila, namely, the Principle of One Lordship, the Indonesian government requires its citizens to embrace any one of the six religions formally acknowledged by the state, i.e., Islam, Protestantism, Catholicism, Hinduism, Buddhism, and Kong Fu Chu. One implication of this regulation is the rejection of atheism as well as mysticism as a belief that a number of Indonesian citizens adhere to. The enforcement of the formal state religions on Indonesian citizens has resulted in efforts of criminalizing religion within the Constitution of Criminal Law (KUHP), of which the former governor of Jakarta, Basuki Tjahaja Purnama (known as Ahok), had become one of its victims. During the three-and-a-half centuries of Dutch colonialism in Indonesia, Protestant churches in Indonesia had become familiarized with Calvinistic teaching and Reformed ideas. The author, by analyzing the Principle of One Lordship from the perspective of Kuyper's teaching on principled pluralism, argues that the imposition of formal state religions that peaks in the criminalization of religion could not be justified as it denies religious freedom guaranteed by Chapter 29 of the 1945 National Constitution (UUD). The Principle of One Lordship must therefore be interpreted anew. From the perspective of principled pluralism, the Principle of One Lordship guarantees not only religious freedom but also the role of religion in the public sphere.