The Bible teaches the doctrine of hell. It’s there. Jesus, the God-man, taught on hell. It’s real.
However the doctrine of hell has been reconstructed to the point of being nonexistent, at least to some theologians and popular religious leaders.
Now I want to set forth J.I. Packer’s brief take on the reason for the existence of hell:
The purpose of Bible teaching about hell is to make us appreciate, thankfully embrace, and rationally prefer the grace of Christ that saves us from it (Matt. 5:29-30; 13:48-50). It is really a mercy to mankind that God in Scripture is so explicit about hell. We cannot now say that we have not been warned. (Concise Theology, p. 263).
The doctrine of hell is emotive. To be honest, I wish it didn’t exist. My finite my wrestles with its existence, but I often yield to the infinite mind of Almighty God.
As it stands, “Scripture sees hell as self-chosen… Those who are in hell will know not only that for their doings they deserve it but also that in their hearts they chose it” (John 3:18-21; Rom. 1:18, 24, 26, 32; 2:8; 2 Thess. 2:9-11; pp. 262-63).
It is only by the love and mercy of God that we are saved (John 3:16; Rom. 5:6-11; Eph. 2:1-10).