Warren’s criterion for a purpose statement is practical: it must be biblical, specific, transferable, and measurable. The one that tends to be undervalued is specificity — and its downstream consequence, memorability.

His observation: “Nothing becomes dynamic until it becomes specific.” A vague purpose statement functions as a decoration. A specific, short, memorable one functions as a filter. When someone proposes a new ministry, event, or program, a memorable purpose statement gives every leader in the church a tool to evaluate the proposal: does this serve one of our five purposes? If not, why are we doing it?

This is the difference between a mission statement on a website and a mission that actually governs decisions. A mission statement nobody can recite from memory is not a mission — it’s a document. The test is whether any given member, asked without warning, can state the church’s core purpose in one sentence.

Warren’s own formulation — “A Great Commitment to the Great Commandment and the Great Commission will grow a Great Church” — is memorable. It summarizes a theology of the church’s purpose in 18 words. Most people who encounter it remember it. Most multi-page mission documents are forgotten before the meeting is over.

For MNFC or any small church: the operational question is whether the stated purpose is actually driving weekly decisions about programming, staffing, and calendar — or whether it exists only in a founding document. The honest diagnostic is asking ordinary members, not leadership, what the church exists to do.