We may assume that revivals are one of the primary methods God uses to fulfill His purposes in the world. These revivals move according to divine law. There is an orderly sequence in their movements. But can we discover this sequence? Do revivals recur at definite intervals? Can we forecast their appearance, as astronomers forecast the appearance of a comet? Obviously, this is impossible. The movements cannot be treated as an exact science. Human life does not move with precision. The wills of men and women enter, with all their inconstancy. The unexpected occurs, which changes the course of events. While these cannot stop God's plan, they may retard it.
It is impossible for us to map out with precision the recurrence of revivals. This does not mean that all that pertains to them is hidden away in the unsearchable purposes of God. It is clear that their appearance at specific times is is not haphazard. One's spiritual nature is not allowed to stagnate for long periods. Neither do revivals rush upon men and women at random, without preparation or purpose. A certain law of periodicity is discernible. Even though we cannot prophesy with unerring accuracy their arrival, we can at least know that behind them is divine law and order.
