And now, I, Moroni, would speak somewhat concerning these things; I would show unto the world that faith is things which are hoped for and not seen: wherefore, disputes not because ye are not, for ye receive no witness until after the trial of your faith. For it was by faith that Christ showed Himself unto our fathers. After He had risen from the dead: and showed not Himself unto them until after they had faith in Him: wherefore, it must needs be that some had faith in Him, for He showed Himself not unto the world.
Ether 12:6-7