A Bug's Life (Disney)
Overview -- Hopper explains to his gang that one ant may be harmless and unable to stop them, like throwing one seed at a gang member. Hundreds of ants joined together, though, could bury them as surely as hundreds of seeds do. This speech rallies his gang to crush the ants' spirits before they can rise up.
Point of illustration: Christians sometimes think they can't change the world. We ask, "What can one person do?" Yet a timid Christian voice can become a roar when the voice joins together with the voices of others in a congregation and the voices of the entire body of Christ.
Voice illustration: One person say "Jesus." Now this section say "Jesus." Now this section say "Jesus." Now everyone say "Jesus."
We will only truly impact the world by joining forces with other believers. The mission of a coordinated body of Christ can change the world on an unimaginable scale.
Source: From Group's Blockbuster Movie Illustrations - pages 133, 134. Points are also used from their outline in their book.