Measuring Church Growth

Had an interesting thought yesterday. We traditionally measure church growth by how many come in. When reading the Great Commission, Jesus seems to measure church growth by how many go out.
Go.
Make Disciples.
The Whole World.

Coming together to worship God as a community, seems to more biblical if it is about equipping the saints for the work of ministry, and challenging the lost to follow Jesus and become a disciple. Church services cannot just be about fellowship, or songs, or sermons, but they need to ultimately challenge the body to express their love for God in their day to day lives.
We often compartmentalize our Christianity from our 'Secular work' environments, and we talk as if Sunday morning is the time we spend with God, and the rest of the week becomes about all our other goals and ambitions.
Mature followers of Jesus understand God has called them to be ambassadors all the time, and so whether gathering together as the church, or whether at work, or at home, or at the shops, we are a disciple of Jesus.

If somehow we could measure the going out of the disciples, and not just the coming in of the people for a Sunday gathering, we would find a more accurate, biblical measure of church growth.