Job 11:7 (NIV) Can you fathom the mysteries of God? Can you probe the limits of the Almighty?
Proverbs 8:5 (NKJV) O you simple ones, understand prudence, And you fools, be of an understanding heart.
1 Corinthians 2:7-9 (NKJV) 7 But we speak the wisdom of God in a mystery, the hidden wisdom which God ordained before the ages for our glory, 8 which none of the rulers of this age knew; for had they known, they would not have crucified the Lord of glory. 9 But as it is written: "Eye has not seen, nor ear heard, Nor have entered into the heart of man The things which God has prepared for those who love Him."
[T]hough one may be a competent art critic without ever having handled a brush or a chisel, and may legitimately pass judgment upon a book which one could not have written oneself, in the life of the soul there are no such privileges: there is no knowledge at all unless it is also and equally action, and if it is not that, then it is worse than ignorance.
—John Baillis in A Diary of Ressling.
Christianity Today, Vol. 42, no. 9., Today's Best Illustrations – Volume 5, (Carol Stream, IL: Christianity Today, 1997), WORDsearch CROSS e-book, Under: "I".