The Discipleship Institute offers studies to prisoners through our Prisoner's Bible Institute (PBI).
The Sojourner's Bible Institute is offered to churches for Sunday School curriculum.
The Servicemen's Bible Institute to our military personnel.

The Prisoner's Bible Institute functions in at least two ways. First, through our Rock of Ages missionary chaplains, who will teach the Bible Institute in a classroom setting. This allows our chaplains to involve local pastors and qualified lay people who have a burden to help with the Rock of Ages Prisoner's Bible Institute. Secondly, Bible correspondence courses can be offered to each inmate. The "PBI" is promoted by the revival teams, the discipleship ministry and missionary chaplains. The correspondence and classroom divisions are independent of each other in format, presentation, grading and testing methods. However, the content and subject matter are compatible. Material in printed form is used along with audio and video tapes which can be aired on the prison closed circuit television and radio channels at designated times each day of the week.