Paul wants us to see this “present evil age” is dominated by a theology of glory and “the age to come” is dominated by a theology of the cross. They are two ways of understanding and interpreting all of reality, but especially the ways and nature of God.
The fact of Jesus being the greatest of all priests in the greatest of all orders of priesthood, means Jesus is the consummate pastor for those in need of a powerful and availing shepherd.
Christianity is not about principally about ethics. It was the Cross on the Hill rather than the Sermon on the Mount that produced the impact of Christianity upon the world.
Because this life is transient and we already live in the new and eternal age restored in Christ (at least in part), our preoccupations are different to those bound to this world and life.