The purpose of this paper is to verify the effectiveness of designing and applying an educational plan for the Initial Law using the North and South Korean Bibles to enhance the vocabulary of North Korean defectors. The research method involved the following steps. First, an educational vocabulary list was selected by extracting vocabulary related to the Initial Law from the North Korean Bible and conducting a basic survey. Second, an educational plan for the Initial Law was devised, focusing on the principle of Korean orthography using the Bible. Third, a total of nine classes were conducted by dividing 20 North Korean participants from local churches into an experimental and a comparison group. The experimental group was educated using the North-South Korean Bible, and the comparison group was educated focusing on the principle of Korean orthography in South and North Korea. Fourth, the effectiveness of the education was verified through focus group interviews with the experimental group. The results of the analysis showed the following. First, this experiment confirmed that it is effective in enhancing the vocabulary of North Korean defectors concerning detailed items of the Initial Law. Second, in the case of the experimental group using the Bible, the average score was significantly higher than that of the comparison group. It was confirmed that education centered on the principle of Korean orthography in South Korea and North Korea was effective, and it was verified that the score was higher when using the South Korean-North Korean contrast Bible. Third, as a result of in-depth interviews, when using the North Korean Bible, learners showed interest and actively participated in the education. In addition, Korean orthography education can address some of the problems caused by the language differences between North and South Korea. For example, in South Korea, there was a confusion of identity about the phenomenon that the last name changed from ‘리’ to ‘이’, but the misunderstanding was resolved after education. Although language adaptation education is being implemented by the government as a policy, it is still insufficient, and practical participation has not been made due to the lack of information sharing and economic reasons. In addition, although North Korean defectors try to learn the South Korean language, practical opportunities are insufficient. In order to improve this problem, it could be an effective alternative if language adaptation education is implemented in connection with a church from which North Korean defectors originated. Future research on the development of Korean language norms education programs can be expected.