Not only that, but all who were down on their luck came around—losers
and vagrants and misfits of all sorts. David became their leader. There
were about four hundred in all. I Samuel 22:2 (TM)

One of the themes through scripture is that God uses the least likely,
the weak, the youngest, the smallest, and the handicapped to advance
the kingdom. Think about some of the examples from scripture: Moses,
Joseph, David, Paul, all 12 disciples, even Jesus ("does anything good
come from Nazareth?"). If God uses the least of these, He can and will
use you and me.