Remember, a key is to lock or unlock something. Jesus has the key to lock or unlock Hades, which is the GREEK word for HELL. This is a physical place located within the Earth’s core. Jesus used that key after His crucifixion and before He rose from the dead. It is Jesus who led THOSE CAPTIVE IN PARADISE TO CAPTIVITY IN HEAVEN, under the throne of God. No wonder Paul is saying to the Ephesians: HE LEAD CAPTIVITY CAPTIVE.