"God is coming here to live with you and to take care of you," the vision imparted to him.
The good news was not his to keep alone. After he had been told about the new earth, about the end of turmoil, and the assurance of God's presence and care, John is then given the command to tell about it.
God said to this long ago witness, "Write this, for these words are trustworthy and true. It is done! I am the Alpha and the Omega, the beginning and the end. To the thirsty I will give water as a gift from the spring of the water of life."
We hear the good news, we become part of the good news, we share what we know, what we have been told, what has been done for us. We share by telling and by doing. Through us, God can continue to give water to the thirsty--both literally and metaphorically.