The weekly worship service can be very effective in evangelism of non-Christians and in edification of Christians if it does not aim at either alone but is gospel centered and in the vernacular

The weekly worship service can be very effective in evangelism of non-Christians and in edification of Christians if it does not aim at either alone but is gospel centered and in the vernacular (Timothy J. Keller, Center Church: Doing Balanced, Gospel-Centered Ministry in Your City)