Hell is not a punishment, it is a consequence.

Exodus 32:31-33

1 Samuel 2:23-25

Jeremiah 17:10

Psalm 69:27-29

Psalm 73

Ezekiel 18

Daniel 12:1-2, 10,13

Revelation 22:14

Revelation 13:8

Revelation 14:12

Luke 12:47-48

Luke 14

Matthew 5:17-20

Matthew 22:12

John 10:27-30

1 John 2:3-6