At the center of the Jesus Creed is the Shema, and at the center of the Shema is the God of love, and at the center of the God of love is the word “one”- and that word “one” is a dance. Let me explain briefly. When Jesus said in John’s tenth chapter that he and the Father were “one,” every Jew who heard him thought of the Shema: “Here, O Israel! The Lord our God, the Lord is one.” Now Jesus was claiming that he and the Father were one. So somehow there were “two in one,” and, as the church gradually began to comprehend, there were actually “three in one.” The Jesus Creed derives from this “three-in-oneness of God.”
How are the three “one”? Here are Jesus’ own words: “the Father is in me and I am in the Father.” The oneness of the Father and the Son is the oneness of mutual indwelling of one another. Now, if we add to the Father and the Son the third person of the Trinity, the Holy Spirit, we arrive at something distinct to our Christian faith: the Father and the Son and the Spirit are one because they indwell one another. They interpenetrate one another so deeply that they are one. This “oneness” is often called by theologians the “dance of the Trinity.” God is almost, to quote C.S. Lewis, “if you think me not irreverent, a kind of dance.” God is, to change the image only slightly, the dance of rope in the Celtic knot.
The same theologians often call this oneness of God the perichoresis, a Greek word referring to mutual indwelling. To say the three are one is to say the one God is a community of mutually indwelling persons where each person delightfully dances with the other in endless holy love. This perichoretic dance is the love of the persons of the Trinity for each other- the Father for the Son and the Spirit, and the Son for the Father and the Spirit, and the Spirit for the Father and the Son. Theologians and philosophers remind us that this perichoretic love is the origin, the tone, and the standard for all the love in the universe. There is no other love than God’s love.
The mutual love of the Father, Son, and Spirit forms the pattern for the Jesus Creed. The Jesus Creed summons each of us to dance the dance of the Trinity.
Scot McKnight in 40 Days Living the Jesus Creed, 25-27.