God used the tears of a baby to move the heart of Pharaoh's daughter and ultimately free Israel.  God used a shepherd stick to work mighty miracles in Egypt.  God used a sling and a stone to conquer a whole nation.  God used a little girl to bring the great Naaman to the prophet Elisha.  God used a widow and her little meal to sustain that prophet.  God used a child to teach His disciples lessons on humility.  He used a donkey to speak the truth.  He used a small lunch to feed thousands of people. And He can use us if we will become as clay in the hand of the Potter.

gleaned from John MacArthur' sermon: Divine Sorrow over Spiritual Defection,