The age of artificial intelligence(AI) has arrived. Although there may be differences in degree depending on the country and region, mankind is already living with AI. And that dependence will only increase. Whether they realize it or not, people are already living with the help of services provided by artificial intelligence. The fields are diverse, such as navigation, recommendation of media such as music and video, language translation, information search, and voice recognition assistant. Generative artificial intelligence services such as chatGPT, which provides fluent answers to questions asked by humans, have been recently added. Various artificial intelligence services are providing convenience close to our lives, and humanity seems to be increasingly dependent on those services. Pastors who are in charge of worship and preaching are no exception. Beyond Internet searches, they can obtain various information more conveniently through AI services such as chatGPT. Looking at the current situation from the perspective of Reformed Life Theology, this thesis examines how pastors use AI services in an ethical and responsible manner while responding to the changes of the times. After discussing problems such as data bias, preacher’s accelerating dependence on AI, and their weakening control over it, the researcher briefly expressed a concern that these issues should be dealt with at the denomination level.