Where in the Bible does it talk about the keys of hell?

I don't know about "keys", but there is a passage in Matthew where Jesus tells Peter that He will build His church, and the GATES of hell (Hades) will not overcome it. Jesus then goes on to say that He will give the keys to the kingdom of Heaven, and whatever is bound on earth will be bound in heaven, whatever is loosed on earth will be loosed in heaven. (Matthew 16:17-20) God bless! ANSWER:

Christ has the keys of hell (Revelation 1:18). The Greek Word is Hades. Take away the Pagan Greek philosophical meanings attached to the Word and you realize it is simply the grave. Christ has the keys to the grave because he is the only one through whom salvation (and therefore eternal life) is available (Acts 4:10-12).