A vibrant church is first and foremost an Evangelistic Minded and Oriented Church. The goal of all programs should be the salvation of the lost. This goal has been lost in far too many churches today.
Want to build your Sunday School? Keep it evangelistic. Make sure your teachers know that your primary goal is the evangelism of lost souls. There should be a clear salvation presentation regularly given during the Sunday School hour.
Having a Christian concert? Give them the gospel! Time for the Summer picnic? Give them the Gospel! Having a flea market on a Saturday at the church? Use this as an opportunity to give the gospel tracts to those that come in.
A vibrant church is concerned about souls!!