A major difference between the Old Testament and the New is that the New Testament has Jesus Christ. And as He died for our sins, maybe there is no need for hell?
Only the elect will be saved. John 10:11, 14-16 says clearly that the Good Shepherd laid down His life for His sheep only. Only the limited elect will be saved and the others are going to hell.
Let me direct you to the TULIP doctrine which explains this very well why there is only a limited atonement only for the elect. Most will not be saved, but will be punished in hell as reprobates. Only the pure, elect, chosen by God from before time will be given their places in heaven
People who reject Jesus Christ will go to hell.
Read the Bible. Jesus spoke more about hell than he did about Heaven.
The answer is linked to why those who have rejected Him are removed from His presence eternally after the Judgment.
...as He died for our sins, maybe there is no need for hell?...
Technically, except for fallen angels and OT unbelievers, this would make some sense, except there also are humans who have fallen into the same rejection of what He provides as those fallen angels.
Jesus permeates the OT. The OT is about Him Jesus sez so.
Like us, folks in the OT were saved by faith in Him.
A major difference between the Old Testament and the New is that the New Testament has Jesus Christ. And as He died for our sins, maybe there is no need for hell?