Another sign of spiritual immaturity and sometimes apostasy is when one focuses on certain gospel principles or pursues "gospel hobbies" with excess zeal. Almost any virtue taken to excess can become a vice.

Certain members have wanted to add substantially to various doctrines. An example might be when one advocates additions to the Word of Wisdom that are not authorized by the Brethren and proselytes others to adopt these interpretations. If we turn a health law or any other principle into a form of religious fanaticism, we are looking beyond the mark.