The Old Testament suggests and the New Covenant Reveals the creative action of the Son and the Spirit, 132 inseparably one with that of the Father. This creative co-operation is clearly affirmed in the Church's rule of Faith: "There exists but one God. . . he is the Father, God, the Creator, the author, the giver of order. He made all things by himself, that is, by his Word and by his Wisdom", "by the Son and the Spirit" who, so to speak, are "his Hands". 133 Creation is the common work of the Holy Trinity.