God uses all things for His Glory.
Even when we pick up doubt, focus on it, and it becomes fear.
Our imagination sets in. The lying voices ring out loudly in our ears. We begin to take everything personal. Begin to believe that we are losers. Begin to see obstacles of life are just too big to be removed or even to make our way around.
Much like the Israelites felt each moment that Goliath came out and taunted them. Taunted them and God. They shook in fear.
And along came David. A young man, a slingshot, a small stone.
And His Faith.
David was so outsized there was no denying our God was in control.
How God wants us to be, so we won't forget about Him and go on thinking "we" did it. He uses our doubt and fears, when we feel "outsized", for His glory. Looking back to those "mountain in the road" moments in my life, I can see all proof - it was God who got me through, over, or around.
There are times our God will peel us down to what we think is nothing, so He is all we have to depend on. He removes our pride, our way, our revenge. There are so many times His way doesn't make sense, because we are still focusing on that doubt.
But in the end - His way which has already won.