God uses whatever is available, like you & me when we're available. He doesn't create Saints out of thin air, He creates them out of flesh-&-blood, & normal people like you & me who love the Lord & will let Him use us.Most of the greatest saints the World has ever known were little people who just did what they thought should be done--whether others ever heard about it or not! But they were always there when they were needed, always willing to see the need & respond. If we have real love for the Lord & others, we'll do whatever needs to be done! It all depends upon our yieldedness & willingness to be made willing. It depends on our humility, which is synonymous with love, which is the only thing that can make us willing to go anywhere, anytime, to do anything, for anybody, & be nobody, to please Him & help everybody! (Rom.12:1; Phi.2:3,4)
God bless you all!