What is that death that came upon Adam and Eve because of their disobedience to God?

Many kinds of death came upon them. The body dies by being separated from the soul, which is the source of life for the body, and without it the body loses sensation and decays. And the soul dies through sin, because it loses its spiritual light, inner joy, and divine peace and happiness. It does not decay like the body, but remains in darkness, pain, and bitterness. Also, corruption came upon their offspring, and they became subject to death. The apostle Paul says, “Therefore, just as through one man sin entered the world, and death through sin, and this death spread to all men, because all sinned” (Rom. 5:12).