The Punishment of the Wicked: On Account of Their: Unbelief
Source: TTT
Mark 16:16
Whoever believes and is baptized will be saved, but whoever does not believe will be condemned.
Romans 11:20
That is correct: They were broken off because of unbelief, but you stand by faith. Do not be arrogant, but be afraid.
Hebrews 3:18, 19
And to whom did He swear that they would never enter His rest? Was it not to those who disobeyed? / So we see that it was because of their unbelief that they were unable to enter.
Hebrews 4:2
For we also received the good news just as they did; but the message they heard was of no value to them, since they did not share the faith of those who comprehended it.