There will be heaps more to it than this, but one of the keys tasks will be forging a group’s own sense of its identity.
To this end, a standard worship service needs to be written. This is not necessarily a set liturgy in which the congregation takes part but rather a description of each part of the meeting in terms of its spiritual significance: what do we hope to happen here or there. This will also include set phrases and prayers that express this theology and that are used week in, week out.
As a whole, the service should encapsulate the theology of the group, which of course should be the Gospel. Every week we repeat the core statements of our understanding of the Gospel and why that makes us who we are.
Next, each week we take a portion of the service – a portion of what we do – and we preach on a Scripture that grounds this act.
Remember, whenever you think you’re repeating yourself you probably need to repeat it another two/three times before anyone will remember it!