To be certain of God means that we are uncertain in all our ways, not knowing what tomorrow may bring. This is generally expressed with a sigh of sadness, but it should be an expression of breathless expectation. We are uncertain of the next step, but we are certain of God. As soon as we abandon ourselves to God and do the task that He has placed closest to us, He begins to fill our lives with surprises.
Oswald Chambers Gracious Uncertainty