Revelation 20:10 The devil, who deceived them, was cast into the lake of fire and brimstone where the beast and the false prophet are. And they will be tormented day and night forever and ever.

After a thousand years, the first inhabitants of the lake of fire are still there and now the devil joins them.
The original rebel is dealt with.
All are tormented forever without end.
Does that seem cruel to you?
How about the heartache each of them caused? Does that seem cruel also?
There were wars fought, murders committed, exploitation, torture, hatred, the holocaust, and families torn apart because the pride of Satan was introduced to the lineage of humanity.
Do you still think it cruel or justified?
Regardless of how anyone may feel, God’s justice is righteous.
The salvation He offers today through Jesus is also righteous.
Avoid the coming condemning judgment by accepting Christ as your savior today.