Materialism is the belief that matter is the only thing that exists and that all things can be reduced to matter (and energy since matter is a form of energy). Therefore, materialism would state that all things in the universe, including mankind, are necessarily restricted to operate within the bounds of physical laws. The human mind would cease to exist upon death because the physical brain ceases to function. Materialism would deny the continuation of the mind after death, and would also deny any and all miracles.
Of course, materialism is unbiblical since the Bible tells us that God exists ...