Some days I am all too aware of how like I am to a nondescript jar of clay. 

Ether 12:27 

And if men come unto me I will show unto them their weakness. I give unto men weakness that they may be humble; and my grace is sufficient for all men that humble themselves before me; for if they humble themselves before me, and have faith in me, then will I make weak things become strong unto them.

https://www.lds.org/scriptures/bofm/ether/12?verse=27&lang=eng#p27