Mr. Mueller afterward used to say to brethren who had "too much to do" to spend proper time with God, that four hours of work for which one hour of prayer prepares, is better than five hours of work with the praying left out; that our service to our Master is more acceptable and our mission to man more profitable, when saturated with the moisture of God's blessing-- the dew of the Spirit. Whatever is gained in quantity is lost in quality whenever one engagement follows another without leaving proper intervals for refreshment and renewal of strength by waiting on God. No man, perhaps, since John Wesley has accomplished so much even in a long life as George Mueller; yet few have ever withdrawn so often or so long into the pavilion of prayer. In fact, from one point of view his life seems more given to supplication and intercession than to mere action or occupation among men.
I would probably do this injustice to try and say it any better than Mueller. I am so guilty of living without the Spirit's dew--it's very humbling to consider how often I build wood, hay, and stubble into the ministry.