To ascertain the Lord's will we ought to use scriptural means. Prayer, the word of God, and His Spirit should be united together. We should go to the Lord repeatedly in prayer, and ask Him to teach us by His Spirit through His word. I say, by His Spirit through His word. For if we should think that His Spirit led us to do so and so, because certain facts are so and so, and yet His word is opposed to the step which we are going to take, we should be deceiving ourselves.

A Narrative of Some of the Lord's Dealings with George Müller Written by Himself, First Part.