In the church growth models, an enthusiast is the name given to the Christian believer who is responsible for bringing unbelievers to faith. “Responsible” in this context means the human point of contact where the faith is passed on, not the supernatural work in the heart, which is God’s responsibility! But we know God spreads the gospel through people. Those who spread it, so that others are converted, are called enthusiasts.
Some of these converts will themselves become enthusiasts,
and in turn make more converts. Thus, the enthusiast is an “infected”
Christian, passing on the faith a bit like the way a disease is passed on. Of
course enthusiasts are not effective indefinitely. Just like people with a
disease, the infectious period of an enthusiast is limited. Eventually they are
either run out of contacts, run out of enthusiasm, or find so much else to do
in church they spend too little time in evangelism and witness.
The above scenario describes the limited enthusiasm model
[1]. It follows that church growth is very dependent on the enthusiasts within
the church. A church needs enthusiasts – and should set about generating them!
But what is the best way – to have more enthusiasts, or more
effective enthusiasts? Should they produce quantity or quality?
The advantage of having a mathematical model is that
computer simulations can be used to investigate different strategies. In this
case I will look at the effect of changing the initial number of enthusiasts on
the growth of the church. Then do the same by changing the effectiveness of the
enthusiasts and compare the results.
Increase Quantity of Enthusiasts
Firstly, let the initial number of enthusiasts be increased,
whilst their effectiveness remains the same. Perhaps the church has engaged in
a training programme, or has more of its congregation involved in an outreach
course like Alpha or Christianity Explored. Figure 1 shows the effect of
changing the quantity of enthusiasts on church growth over 50 years. The high
percentage growth is because the church starts small.
Figure 1: Effect on church growth of increasing the
quantity of enthusiasts
The good news is that the
more enthusiasts, the more church growth! For a small number of enthusiasts,
increasing their number has a big effect on growth, the steep slope on the left
of the graph. However, the curve
slows down; adding yet more enthusiasts has a less than proportional effect on
church growth. Yes, it increases, but not in a large way.
Increase Quality of Enthusiasts
Secondly, increase the
effectiveness of the enthusiasts, whilst keeping the initial number of
enthusiasts constant. In this case each individual enthusiast is more
“infectious”. The Christianity they have makes more impact on converting people;
perhaps it is more challenging, more attractive. It is hard to be prescriptive,
but the believer has something an unbeliever wants, so the unbeliever converts and
becomes like it themselves. Figure 2 shows the effect of changing the quality
of enthusiasts on church growth over 50 years. The “conversion potential” is a
measure of enthusiast quality.
Figure 2: : Effect on church growth of increasing the quality
of enthusiasts
When enthusiast quality is low, the effect on church growth
is moderate, the straightish line on the left of the graph from a conversion
potential of 1 to just over 1.5. From a value of 2 onwards church growth
explodes. This value is near a “tipping point”, so that even very small
increases in the quality of enthusiasts has a massive effect on church growth.
A conversion potential of 2 means each enthusiast could be used to convert two
people, if everyone they meet is an unbeliever.
Comparing figures 1 and 2 it is clear that increasing the
effectiveness of enthusiasts has a much bigger impact than just increasing
their number, as long as they pass that effectiveness on. Quality is better
than quantity. But how is the effectiveness of enthusiasts increased?
Churches prefer to increase the number of enthusiasts
perhaps because they feel it is something they can handle. Invite more people
to be trained to do evangelism, put on more courses etc. But to increase quality,
that is the number of people an individual enthusiast could convert,
requires a change both in believer and unbeliever. And only God can do the
latter.
In reality only God can change the believer as well. Yes
there are things churches can to improve effectiveness of those who witness.
They can contact more people – the extra people contacted may already have
their hearts ready to receive Christ. They can be better prepared to answer
questions – just the sort of questions that might be stopping an unbeliever
coming to faith. But ultimately, just as it takes a work of the Holy Spirit to
make unbelievers receptive, it also takes a work of the Holy Spirit to make a
believer infectious – to make them a more effective enthusiast.
It is this work of the Holy Spirit that we are asking for
when we pray for revival. This is why the church needs revival to see
conversions increase and the church grow again. The trouble with praying for
revival is that Christians are often more willing to pray for unbelievers to be
open to Christ than they are for themselves to be set on fire and be made
infectious Christians. Revival must start in the heart of the believer.
When, as Christian believers, we come to terms with the fact
that the problem with church decline is in our hearts, and that the need for us
to be effective in witness, to be infectious for God, will make huge demands on
our lives – only then can our prayer for revival bring what we ask for. Because
it is only that way, quality not quantity, that people will be able to say:
“God did this, they could not have done this themselves.” It is quality, not
quantity, that gives the glory to God alone. Conversions and church growth are
only means to an end – that end is the glory of God, displayed in Christ Jesus
saving sinners. “Lord Jesus, make us effective enthusiasts for You.”
References and Notes
[1] The limited enthusiasm model is described on my website
along with various results
The work is published:
- A General Model of Church Growth and Decline. Journal of Mathematical Sociology, 29(3), 177-207, 2005.
- A Dynamical Model of Church Growth and its Application to Contemporary Revivals. Review of Religious Research, 43(3),218-241, March 2002.
- Mathematical Modeling of Church Growth, Journal of Mathematical Sociology. 23(4), 255-292, 1999.