Abrahamic faiths work on a 'reward' (heaven) 'punishment' (hell) system, indoctrinating their adherents early on (childhood rituals) which sets up a psychological guilt if the system is not followed as prescribed.
I am not aware of the differences in 'Christendom' and the 'first-century teachings of Christ' . . . please elaborate.
Yes, there is a false teaching of reward heaven and punishment hell.
According to Scripture, No one who died before Jesus had a heavenly hope of going to heaven - John 3:13
That includes people like King David - Acts of the Apostles 2:34, and John the baptizer - Matthew 11:11.
Most people going to heaven is a made-up teaching of Christendom, which developed 'after' 1st-century Christianity ended
- Acts of the Apostles 20:29-30
God's promise to father Abraham was and earthly promise - please notice Genesis 12:3; Genesis 22:18
All the faithful of Hebrews chapter 11 have Not seen that earthly promise yet - Hebrews 11:13; Hebrews 11:39
Under Christ's coming 1,000-year governmental rulership over Earth is when they will have a healthy physical resurrection on Earth.
That is why the ' future tense ' is used at Acts of the apostles 24:15 that there ' is going to be ' a resurrection....
Jesus did open the way for some to be resurrected to heaven - Revelation 20:6; Revelation 5:9-10; Luke 22:28-30
The majority can have the same opportunity that was given to Adam before his downfall to live forever on a paradisical Earth.
Mankind will see the return of the Genesis ' tree of life ' for the healing of earth's nations - Revelation 22:2
That means enemy death will No longer exist on Earth - 1 Corinthians 15:26; Isaiah 25:8; 1 Corinthians 15:55
As far as biblical hell goes. The Bible's hell is: mankind's temporary grave for the sleeping dead.
The old Hebrew Scriptures teach sleep in death -> Psalms 115:17; Psalms 146:4; Daniel 12:2; Daniel 12:13; Ecclesiastes 9:5
That is why Jesus also likened death to sleep at John 11:12-14.
If biblical hell was a permanent place then No one could be resurrected out of hell.
Can you think of anyone righteous who went to biblical hell ? ______
According to Acts of the Apostles 2:27 righteous Jesus went to hell the day he died, but Jesus did Not remain in hell.
Jesus has keys to unlock biblical hell according to Revelation 1:18
Please also notice that according to Revelation 20:13-14 that the Bible's hell comes to a final end.
After everyone is ' delivered up ' out of biblical hell, then emptied-out hell is cast vacant into a symbolic ' second death' for vacated hell.
So, except for those of Matthew 12:32; Hebrews 6:4-6, death frees or acquits a person from sin according to Romans 6:7.
There is No post-mortem penalty, or double jeopardy, for the dead - Romans 6:23.