Every one of those people died. But they still had faith, even though they had not received what they had been promised. They were glad just to see these things from far away, and they agreed that they were only strangers and foreigners on this earth.
Christ died to rescue those who had sinned and broken the old agreement. Now he brings his chosen ones a new agreement with its guarantee of God's eternal blessings!
But they were told that they were serving you and not themselves. They preached to you by the power of the Holy Spirit, who was sent from heaven. And their message was only for you, even though angels would like to know more about it.