1 Thessalonians 5:19
Quench not the Spirit.
I heard a few nights ago that if you take a bit of phosphorus, and put it upon a slip of wood, and ignite the phosphorus, bright as the blaze is, there drops from it a white ash that coats the wood and makes it almost impossible to kindle the wood. And so when the flaming conviction laid upon your hearts has burnt itself out, it has coated the heart and it will be very difficult to kindle the light there again.
(A. Maclaren, D. D.)
Parallel VersesKJV: Quench not the Spirit.