Many Adventist students at the University of Arusha cease to participate in church programs like evangelism, nurturing one another, being interested in prayer meetings and other worship programs as soon as they join university studies. It is like in their previous levels of study they were not participating in these programs or they start to neglect them when they reach this level. The research that was done from 2017 to 2018 showed that six Adventist students were identified as being involved in sexual immorality and three in drug abuse, one in abortion while five students were found involving themselves in drinking alcohol. More than seventy percent of Adventist students were not participating in the church mission activities at the University of Arusha. Mentorship as a discipleship relationship between the mentor and mentee for the purpose of holistic growth seems to be more practical both in the Old and New Testament. This works as the means to minimize the problem. This article is dedicated to find out the biblical principles which were used in the Old Testament and in the New Testament to enhance the commitment of the Adventist students to faith in God. These principles will be useful in the plan of improving the Adventist students’ commitment to faith at the University of Arusha. In the Old Testament, mentorship was used as the method to heighten and nurturing the believers to be committed to what they believed while the New Testament used the discipleship techniques to fulfill the same goals.