Okay. My kids are nearing their 40s. What I wish I had said and now have a chance with my grandchildren.
I linked below my last two Posts written about hell.
12 Reasons To Believe Hell Is A Myth!
And a Site with several articles about Heaven:
No one would think a loving God or caring parent would create a place to torture those who didn’t believe while a short time here on earth. Such pain serves no purpose. Most humans wouldn’t even treat their enemies that way. The only reason one may believe in Hell is because it is believed to be claimed to be real in a Book (Bible) that supposedly God inspired (controlled the writers having correct views of God written down). But it turns out the Bible can be interpreted to not believe Hell is a literal place. See articles above.
What I tell a young child about heaven and hell when they bring it up.
Heaven is a place everyone goes after death here on earth to be with God. See link above about Heaven. It case you don’t believe that, you tell your kid Santa Claus is real and surely you don’t believe that is true – overweight guy visits every house in the world in one night on a sled pulled by reindeers and goes down every chimney. You tell them they will always be safe flying, but you don’t know for sure their plane won’t crash.
I may ask a child what they have heard Hell is. I would tell a child Hell is not a literal place. It is sometimes mentioned in the Bible as a place people don’t believe in God’s or don’t want God’s influence- not treating others kindly or like you want to be treated. I tell adults Hell is a metaphor (There is a heavenly or hellish way to live life).
Parents – God’s influence in life is similar to the influence you hope to have in your kid’s life.
What God May Really Be Like - Misbeliefs About God 