Christian education should serve a holistic learning to the students. The teacher should be able to bring the students to the understanding that knowledge is not the ultimate purpose of education, but the more important thing is knowing the reason why they must learn that thing. In other words, education does not only make the students learn about the creation, but it is about the Creator. The purpose of this paper is to explain how important Biblical integration should be applied in the classroom and to discuss the teacher's role in doing it. Moreover, Christian believe that all the things Christian do, it must be according to the Truth in the Bible. As result, Christian schools must be oriented to the Bible principle. It is also found out that the teacher has a role name as a mediator between the Truth and the students. This paper claims that Biblical integration is the way to help the students experience a holistic education in their life. The method used in this research is qualitative research. The instruments used in this research are the Reflection journal and Lesson Plan.