You need to address the question we are discussing. Unless you have spoken to 2 billion people about Christ, my question still stands. You said;
How are these people be saved when there IS NO DOOR FOR THEM TO KNOCK UPON?
God does not "open the door for everyone".
This is simple mathematics. You don't have to be God to figure this out. I think you can figure it out too. Maybe someone can help you with the math/logic.
Jesus knows, and he did not tell you, or me the eternal estate of any other person.
Why do you think Jesus did not tell you ?
Right down to having spiritual knowledge of your own Parents or children .
Never mind 2 billion people you have never met .
You cannot say with absolute certainty whether or not even your own family members are saved ?
That's a yes or a no?
Not being given knowledge of even your own family members being saved .
For me the reason Jesus has not allowed you, or me, to have absolute certainty about our own parents, brothers, sisters , children , grandchildren , grandparents, being saved is the same reason you and me have no certainty about
the salvation of any other person you do not even know on topside earth .
He is God, and we are not .
We had a beginning , He never began .
When you understand that He is God and we are not, He is Almighty and we are not , He is all knowing and we are not , then this and many other of the endless questions that we have, not directly related to our own eternal estate, can be answered through the Spirit of Abba Father ( Papa ) Christ spoke of in much the same manner that our own earthly Father's often answered our endless line of questionings we had as children : " Daddy says so "
This is why Jesus said we must come to salvation in Him as little children not being distressed & frustrated because we are not like God & don't know everything God knows , but being comforted in holding the hand of Him that does know all things.
Our Daddy .
" Except ye be converted and become as little children , ye shall not enter
into the kingdom of heaven . "
( Matthew 18:3 )