At the center of the universe, self-giving love is the dynamic currency of the trinitarian life of God. The persons within God exalt each other, commune with each other, defer to one another. Each person, so to speak, makes room for the other two. I know it sounds a little strange, but we might almost say that the persons within God show each other divine hospitality. After all, John's Gospel tells us that the Father is "in" the Son and that the Son is "in" the Father, and that each loves and glorifies the other. The fathers of the Greek church called this interchange the mystery of perichoresis and added in the Holy Spirit--the Spirit of both the Father and the Son. When early Greek Christians spoke of perichoresis in God, they meant that each divine person harbors the others at the center of his being. In a constant movement of overture and acceptance, each person envelops and encircles the others.

Supposing that hospitality means to make room for others and then to help them flourish in the room you have made, I think we could say that hospitality thrives within the triune life of God and then spreads wonderfully to the creatures of God. The one who spreads it is a mediator, a person who "works in the middle." We ordinarily think of Jesus Christ as the mediator of salvation, but I think we can see now that those mysterious places in the New Testament that speak of creation happening "through Christ" reveal that the agent of redemption is also the agent of creation. Christ is the person designated to work in the middle both times.

The Scriptures do not explain how Christ mediates at Creation, or exactly why, but they do give us hints. They say, for example, that Christ is not only the Son of God but also the "wisdom of God" and the "word of God." These metaphors suggest that the work of Jesus Christ represents the intelligence and expressiveness of the triune God. According to God's intelligence, the way to thrive is to help others to thrive; the way to flourish is to cause others to flourish; the way to fulfill yourself is to spend yourself. Jesus himself tried to get this lesson across to his disciples by washing their feet, hoping to ignite a little of the Trinitarian life in them. The idea is that if--in a band of disciples, in a family, in a college--people encourage each other, pour out interest and goodwill upon each other, favor each other with blessings customized to fit the other person's need, what transpires is a lovely burst of shalom.

Cornelius Plantinga, Engaging God's World: A Christian Vision of Faith, Learning and Living