From one perspective an educational process with three distinct stages appears in sharp relief: the first for the youngest members of the community, the second for those in the challenging transitional years, and the third for youth and adults.
(Universal House of Justice, 12 December 2011, Message to all National Spiritual Assemblies)
Invariably, opportunities afforded by the personal circumstances of the believers initially involved—or perhaps a single homefront pioneer—to enter into meaningful and distinctive conversation with local residents dictate how the process of growth begins in a cluster. A study circle made up of a few friends or colleagues, a class offered for several neighbourhood children, a group formed for junior youth during after-school hours, a devotional gathering hosted for family and friends—any one of these can serve as a stimulus to growth. What happens next follows no predetermined course. Conditions may justify that one core activity be given precedence, multiplying at a rate faster than the others. It is equally possible that all four would advance at a comparable pace. Visiting teams may be called upon to provide impetus to the fledgling set of activities. But irrespective of the specifics, the outcome must be the same. Within every cluster, the level of cohesion achieved among the core activities must be such that, in their totality, a nascent programme for the sustained expansion and consolidation of the Faith can be perceived. That is to say, in whatever combination and however small in number, devotional gatherings, children’s classes and junior youth groups are being maintained by those progressing through the sequence of institute courses and committed to the vision of individual and collective transformation they foster. This initial flow of human resources into the field of systematic action marks the first of several milestones in a process of sustainable growth.
(Universal House of Justice to the Continental Board of Counsellors, 28 Dec 2010)