Isaiah saw a new creation coming. The Gospel was the announcement that new creation was beginning. The proof of this was the resurrection of Jesus from the dead. The chief witnesses were the Apostles of our Lord. They taught that in Jesus the world was not going to disappear as the “late great planet earth”, but that there was going to be from this earth a new heaven and a new earth wherein dwelt righteousness.
“The wolf shall live with the lamb, the leopard shall lie down with the kid, the calf and the lion and the fatling together, and a little child shall lead them. The cow and the bear shall graze, their young shall lie down together; and the lion shall eat straw like the ox. The nursing child shall play over the hole of the asp, and the weaned child shall put its hand on the adder’s den. They will not hurt or destroy on all my holy mountain; for the earth will be full of the knowledge of the LORD as the waters cover the sea.” Isaiah 11:6-9 (NRSV)