I'm finding the description of the church today both apt and encouraging, but more to the point, as an old geezer, still more or less mobile, and with a wife of like mind, we are asking God what he still has in mind for us. Scary, but since we left our overseas ministry area eleven years ago, we've been focusing on what we call "intentional grandparenting." We've moved four times, each time without a clear job situation, but sensed we were going where the Lord wanted us to go. In each situation he has taken care of us and provided unexpected opportunities for service. A standard question in one of my small groups is, "OK, Lord what would you have *me* do?" I see Mark's book addressing this issue in a multitude of ways, so much so, that I've ordered copies for all the guys in my group, because we're all considering what our options are at this stage of life. All the rest of them are functionally retired, but not satisfied with sitting on the porch watching the sun go down. Retirement may be required by different organizations, but as an overall concept, we don't see it described or required in the Bible.