The One About Revival Vs. Revivalism

What is the difference between "Revival" and "Revivalism?" Where do we see revival in scripture? We talk about how important it is that following Christ is far more than a hightened spiritual event and the importance of discipleship in the life of the believer, especially within the local church. 

For further understanding you can purchase: 

"Revival and Revivalism" by Iain Murray