You might have come to this thread thinking, “Oh this is an easy one.” But I ask you to resist the urge to not read past the title. What I am about to say requires a truth-seeker’s heart, humility, and a thirst for the rightly-divided Word of God.
One of the most well-known verses inside and outside of Christendom is also one of the least understood.
Jesus asks us in a number of places to drop our preconceived notions, to stop thinking too much, and just believe like a child does. That’s the only way to really understand the Word of God.
John 3:16 KJV
16For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
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whosoever believeth in him should not perish…”
The physical bodies of all mortals perish, whether they are unrighteous or righteous. The unrighteousness soul and spirit will not live forever under any circumstances because they did not believe. They will cease to exist, they will perish, they will not be conscious and alive like the righteous are.
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…but have everlasting life…”
Therefore, the promise of never perishing applies to the soul and spirit of the person who believes in Christ. The person who believes in Christ will have a soul and spirit that has everlasting life. They will be living forever in eternal conscious communion with God.
Concisely: believe in Jesus and you’ll live forever. Don’t believe in Jesus and you won’t live forever. Full stop.