We have declared it already. He is risen. He is risen indeed.
Christ has risen from the dead, and He is alive in a way that makes it impossible for Him to go back again. Death no longer has dominion over Him, and this means that, although He is still fully and completely human, He cannot die again. The life He has is irreversible and everlastin.
But if Jesus Christ, the prototypical human being, the archetypical man, cannot die, what are the ramifications of this? It means that a principle of abundant and increasing life has been inserted into this world of death, and that principle is inexorable. It cannot be reversed; nothing can be done about it. Of course, the only ones who would want to do something about it are those who, for various reasons, are in love with the old ways of death.
But even that love for death is going to be overcome. In Proverbs, Wisdom declares that all who hate her love death. But this means that if life is inexorably here, and it is, and that life is growing and expanding, it follows that the world is becoming wise. This is of course not because there was any wisdom or soundness within us; it is all the grace of God.
The resurrection of the Lord was a public event, just as His death was. This means that the principalities and powers, however much they would like to change the rules of the game now, cannot turn this into a private religion. They executed Him in public, and they posted guards, paid at the taxpayers’ expense. This means that government employees were the first witnesses of the resurrection, and nothing can be done about it now. If they wanted Christians to worship Jesus within the confines of our hearts only, they should have executed Him in the confines of their hearts only.
But they did not, and He died in public. They did not, and so He rose again and appeared publicly to hundreds of people. And consequently, the Lord told us to declare these realities—again publicly—to the entire world. That is what we are engaged in doing, and that is the process that cannot be stopped until the earth is as full of the knowledge of the risen Lord as the waters cover the sea.