In short, apostolic movement involves a radical community of disciples, centered on the lordship of Jesus, empowered by the Spirit, built squarely on a fivefold ministry, organized around mission where everyone (not just professionals) is considered an empowered agent, and tends to be decentralized in organizational structure.
When the church is in mission, it is the true church. The church itself is not only a product of that mission but is obligated and destined to extend it by whatever means possible. The mission of God flows directly through every believer and every community of faith that adheres to Jesus. To obstruct this is to block God's purposes in and through his people.
Because we believe that somewhere in the nest of paradigms contained in the phrase "missional church" lies nothing less that the future viability of Western Christianity.