What makes you think that non-Christians don't go to heaven? Was it something you read, or is this a first-hand experience?
It's called 'Faith'.
Just like that chair you are sitting on has not collapsed. It ALWAYS held you up before, and you have 'faith', not PROOF, that it always will.
Here in Central Indiana a couple of days ago, a tree, that had 'faithfully' stood at the side of the road for a hundred years, fell onto a car driven by a local pastor. His entire family - wife and 3 kids - were with him.
Four were killed. Only the smallest girl survived, with mere scratches.
Where is FAITH when something like THIS happens???
What makes you think that non-Christians don't go to heaven? Was it something you read, or is this a first-hand experience? In this case, it was a quote from the One who built Heaven.
John 14:6 Jesus answered, "I am the way and the truth and the life. No one comes to the Father except through me.
Shalom.