Death Means Eternal Separation From God

Behold, all souls are Mine; the soul of the father as well as the soul of the son is Mine; the soul who sins shall die. Ezekiel 18:4 For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life. For God did not send His Son into the world to condemn the world, but that the world through Him might be saved. He who believes in Him is not condemned; but he who does not believe is condemned already, because he has not believed in the name of the only begotten Son of God. John 3:16–18