Bolsters the traditional Christian belief in the reality of hell.
Belief in hell is a common theme in many religions, including Islam.
If you remember the Yazidis who were trapped by ISIS on a mountain in Iraq and who were killed tortured and many women taken as hostages . The Yazidis do not believe in hell.
There is no end to religious beliefs about the hereafter.
That's not a problem, but Muslim beliefs that if you don't agree with them, and convert to Islam, that is a problem for the naive uninformed Infidels.
We are living that experience right now. -Tom