What is Hades ? 

The abode of the dead for both unbelievers and believers. Hades has 2 compartments "Abraham's Bosom" and "The Place Of Torment". Jesus proclaimed His victory to this spirit world after He died on the cross.  

Video - Did Christ Descend into Hell or Hades? - Douglas Wilson

Video - Did Jesus really descend into Hell ?- Hank Hanegraaff

Video - The Teaching of Joel Osteen - Hank Hanegraaff

Luke 16:23-24

In Hades he lifted up his eyes, being in torment, and *saw Abraham far away and Lazarus in his bosom. And he cried out and said, ‘Father Abraham, have mercy on me, and send Lazarus so that he may dip the tip of his finger in water and cool off my tongue, for I am in agony in this flame.’

Revelation 20:14

Then death and Hades were thrown into the lake of fire. The lake of fire is the second death.