Almost anytime I mention numbers related to church life, I anticipate some responses about the value of numbers and congregations. In the 1980s, this type of discussion came primarily from more liberal churches that weren't growing. Some of these leaders felt that declining membership and attendance was likely a sign of health. The members who really cared about the church were the ones who remained. They could make the biggest difference without the more nominal members remaining as obstacles.
Today, it is not unusual for me to hear from more conservative church leaders that declining church numbers may be a good sign because it is an indication that the numbers reflect true regenerate members. But, for the purpose of this brief article, let's assume that attendance growth is a positive indicator. Presumably more people are hearing the gospel and being discipled when a church is growing.