The Resurrected Man

The gospel is preached because there is a resurrected man living in newness of life. The first born of the new creation.
Isa 65:17 The LORD says, "I am making a new earth and new heavens. The events of the past will be completely forgotten.
Isa 65:18 Be glad and rejoice forever in what I create. The new Jerusalem I make will be full of joy, and her people will be happy.
Isa 65:19 I myself will be filled with joy because of Jerusalem and her people. There will be no weeping there, no calling for help.