And we might think that life is weak against the power of death. We might feel that life is just a small firework in the cold black darkness; that its light lasts only a brief moment, and nothing more than that. And if we really yield to this feeling, then death wins. That is the victory of death.
And this is the thing that Jesus did challenge. In some religions, such as the religion practiced in Egypt in ancient times; or in some schools of thought in Japanese Buddhism; they think about the world of the dead, and try to guide the newly dead man to a safe place in that world.