After mentioning a few erroneous definitions and assumptions about what the church is, Mark Driscoll and Gerry Breshears, professor of theology at Western Seminary, Portland, OR., based on Acts 2:42-47, offer a summary of what they consider “a biblical definition of church as God meant it to be”:
The local church is a community of regeneration believers who confess Jesus Christ as Lord. In obedience to Scripture they organize under qualified leadership, gather regularly for preaching and worship, observe the biblical sacraments of baptism and Communion, are unified by the Spirit, are disciplined for holiness, and scatter to fulfill the Great Commission and the Great Commandment as missionaries to the world for God’s glory and their joy. (Doctrine: What Christians Should Believe, p. 307)
Apart from the fact that Driscoll and Breshears (a) began with the church catholic and then switched to the “local church” in their definition, (b) based their definition on Acts 2:42-47, which is not meant to be the “biblical definition of the church as God meant it to be,” (c) no mention of prayer, which is mentioned in Acts 2:42, (d) and there’s no mention of members ministering to one another—this definition is a good place to start.