God is not looking for extraordinary characters as His instruments, but He is looking for humble instruments through whom He can be honored throughout the ages.
A friend ... said, "You were healed by faith." "Oh, no," I said, "I was healed by Christ." What is the difference? There is a great difference. There came a time when even faith seemed to come between me and Jesus. I thought I should have to work up the faith, so I laboured to get the faith. At last I thought I had it; that if I put my whole weight upon it, it would hold. I said, when I thought I had got the faith, "Heal me." I was trusting in myself, in my own heart, in my own faith. I was asking the Lord to do something for me because of something in me, not because of something in Him.
Difficulties and obstacles are God's challenges to faith. When hindrances confront us in the path of duty, we are to recognize them as vessels for faith to fill with the fullness and all-sufficiency of Jesus.