Excerpt Dag Heward-Mills, Church Planting (1998)

 It is better to participate than to be an observer. Observers often become critical of everything. 

After being idle for some time, you begin to see all the faults in your church.  

You will notice the pastor's mistakes when he preaches. You will notice his mistakes when he quotes Scriptures. You will notice when the anointing is not as strong as it usually is. 

Before long, you will be familiar with all the shortcomings of your church. You will eventually  fall into criticism and become faultfinding. Demons will find in you a haven.