I'll start by saying that I am an atheist. I'm wondering what all the different believers "believe" about the afterlife. Does a newborn baby, who dies 2 minutes after birth, stay a newborn baby in the afterlife? Does a person with severe mental retardation, suddenly become an Einstein level genius? When the lack of oxygen to their physical brain kills that last brain cell, do they enter a new realm of existence where they have total knowledge?
While we're at it, maybe someone can explain to me how a group of old men, can suddenly "decide", after 2000 years, that unbaptised newborn children that die, no longer go into limbo, but now go to heaven. How exactly does that work? And how did they tell god of their decision? Did all the ones that had been in limbo, move into heaven the next day? Were they going into limbo before Christianity existed? Or was it only after Baptism started, that children that weren't baptised were going into limbo, but now they're not?
An inquiring mind wants to know and you ask reasonable questions.
Hope I can be of some help.
In a nut shell, there are two resurrections in the Bible.
First there is a resurrection of Christ's 'brothers' to heaven to rule with Christ for a thousand years.
[Rev 5vs9,10; 20v6; Matt 25v40; 1st Cor 15v50]
and then there is an earthly resurrection for the majority of mankind to gain everlasting life on a paradisaic earth.
[Romans 6 v7, 23; Psalm 37 vs11,29]
In the meantime, according to Jesus [John 11vs11-14], the dead sleep the deep sleep of death until resurrection morning, or the millennial-long day of Jesus ruling over earth. Jesus would have learned that the dead know nothing from: Ecc. 9v5; Psalm 6v5; 13v3; 115v17; 146v4; Daniel 12 vs2,13.
Jesus' resurrections were a small scale demonstration of what he will do on a large or grand scale during his millennial reign. All were resurrected healthy.
So Biblical afterlife is resurrection first to heaven, then the rest on earth during Jesus peaceful 1000-year reign over earth. -Acts 24v15.
So they too will have health.-Isaiah 25v8;33v24; Rev 21vs4,5
How can a group of men suddenly decide things is because as Acts 20vs29,30 mentions that after the apostles were gone, that wolf-like clergy, dressed in sheep's clothing, would fleece the flock of God.
Jesus forewarned us that genuine Christians [wheat] would grow together over the centuries with fake Christians [weeds/tares] until the harvest time of separation, or the time of separation of Matthew 25vs31,32.
Now is the time of 2nd Thess 2vs2-8 when the man of the cloth that is in opposition to God will find himself sitting in the 'temple' [houses of worship] showing himself that he is God, when he is really anti-God.
Mark 7vs7,13