In his book "The God Chasers", Tommy Tenney says: "We need to learn to entertain and welcome the manifested presence of God to such a degree that just the residue of what has gone on among us brings sinners to the point of conviction and conversion instantaneously. I am hungry for that kind of expression of revival, but if we're not careful we are going to let the lamp flicker out. We do not have a lock on God because we're not married to Him yet. He is still just looking for a bride without spot or wrinkle, and we need to remember that He already left one bride at the altar and He'll leave another." What does he mean by "He already left one bride at the altar"?