Can you provide some sources for your statements? I'd like to discuss this with you further.
Well, for your specific question about where did good people go before Jesus died? We know that according to Jesus Christ own words no one has ever ascended to heaven except the son of man.Jesus explained this to Nicodemus.
John 3:12,13. …
12"If I told you earthly things and you do not believe, how will you believe if I tell you heavenly things? 13"
No one has ascended into heaven,
but He who descended from heaven: the Son of Man.
So, here from Jesus own mouth, in scripture, we can clearly see that only he has gone to heaven.
Those who died before went into Sheol,Hades,a grave.All did.Even God's chosen ones like King David.
Acts 13:36 "Now when David had served God's purpose in his own generation,
he fell asleep; he was buried with his ancestors and his body decayed.
When people die they know nothing and return to the earth.They do not go to heaven like many assume.They go to a grave and await.Just like Jesus displayed while on earth.Unlike David,Jesus body did not decay.He was resurrected by God.
Ecclesiastes 9:5 For the living know that they will die,
but the dead know nothing; they have no further reward, and even their name is forgotten.
Acts 2:31.Seeing what was to come, he spoke of the resurrection of the
Messiah, that he was not abandoned to the realm of the dead, nor did his body see decay.
Here we have a quote from Psalm.It speaks of Jesus not staying in the grave but being resurrected as promised as a witness to the world.This is why Jesus is called the first and the last.He was the first to be resurrected to eternal life,by God personally.And the Last.Jesus himself resurrected people while he was preaching.Like his good friend Lazarus.Lazarus though was not resurrected to eternal life on earth.He was resurrected back to a mortal life.Jeusus on the other hand was the first to be resurrected to eternal life as a spirit.When Lazarus died, he went back to a grave,not heaven.Jesus ascended to heaven after 40 days of walking the earth appearing to people.