The only way to be sent is to let God lift us right out of any sense of fitness in ourselves and place us where He will. The man whose work tells for God is the one who not only realises what God has done for him but who realises his own utter unfitness and overwhelming unsuitability—the impossibility of God ever calling me .
Chambers, O. 1996, c1946. Approved unto God. Marshall, Morgan & Scott: Hants UK
I've been teaching k-2 sunday school for two years now. Why? Simply because the Lord told me to. We're on break for the summer and I've been praying about whether or not to continue with it next year. You see it's miles outside of my comfort zone, definitely not one of my spiritual gifts. If the kids learn anything, it is because the Lord shows up every single Sunday. If I'm a good teacher it's only because I have no other resource than to allow Him to work through me, not through my talents, but quite literally through my mouth, my arms and my legs (there's no other way the car would even make it to the parking lot by 9am). I kept thinking that these were reasons to bow out, but upon reading the quote above, I know that these are the very reason He wants me to keep teaching.