Take time and trouble to keep yourself spiritually fit.*
As J. Oswald points out, true discipleship is more than intellectual assent to a belief in Christ; it involves the whole person and lifestyle.
Those with only superficial belief will soon fall away from the faith, but Sanders says a true disciple would rather be presented with a difficult challenge than a soft option. Disciples are charged with the task of training themselves to be godly, because it is their responsibility to remain spiritually fit.
In addition, a “For Reflection” guide is included, making this book ideal for both individual and group study.
* 1 Tim. 4:7, JB Phillips Translation