Warren identifies four distinct types of small group, each designed to fulfill a specific purpose rather than attempting all five. Seeker groups (evangelism): a Bible study or interest-based gathering designed for the unchurched, meeting people where they are rather than expecting them to enter church culture first. Support groups (fellowship/care): focused on specific shared needs — grief, addiction recovery, marriage difficulty — providing the community that meets people in crisis. Service groups (ministry): people organized around a shared task, like an audio team, a food pantry crew, or an outreach team. Growth groups (discipleship): intensive study and accountability for committed disciples.
The insight is practical: a single small group model asked to be all things — evangelistic and caring and ministry-oriented and deeply discipling — ends up being none of them well. The format, the pace, the conversation style, the level of theological expectation, and the appropriate emotional temperature are completely different for each purpose. A seeker-friendly group needs low theological prerequisite; a growth group needs high expectation. A support group needs emotional safety above all; a service group needs task clarity.
Expecting one group format to serve all of these guarantees a mediocre experience for everyone. The seeker finds it too churchy; the committed disciple finds it too shallow; the person in crisis feels rushed toward tasks.
Warren’s solution: design multiple group types intentionally, each serving a specific circle and purpose. Not every church member participates in every type — but the full menu is available, and people are invited into the type that fits their current stage and need. As people move through the circles of commitment, the group type they’re invited into shifts accordingly.