In Ephesians 4:14-32, Paul tells the Ephesians how to live as a ‘new ma’n. First, live in Christ firmly in faith, grow in Christ, and live under the guidance of the Holy Spirit. Second, get rid of the ‘old man’, that is, by getting rid of vain thoughts, putting off useless dirty words, and getting rid of bitterness. Third, to be continually renewed in Christ, that is, to be renewed in spirit and renewed in mind. Fourth, putting on the new man, that is, living in righteousness and living in holiness. The teaching of the Apostle Paul in Ephesians 4:14-32 clearly shows the difference between the lives of those who do not live in Christ or the old man and the lives of those who live in Christ, meaning those who live in Christ. have received Christ as a whole in his life or a new man. This description aims to show that people who live a long life will go through destruction because of their deceitful passions (Ephesians 4:22). Paul himself claimed that "without Christ there is no salvation." The researcher concludes with testing of the first hypothesis shows that the level of confirmation of the teaching of the Apostle Paul about the New Man based on Ephesians 4:14-32 among teachers of Christian religious education in Sleman Regency and Yogyakarta City (Y) is in the medium category, this is in accordance with the proposed hypothesis. Thus the proposed hypothesis is declared accepted.