“Distinct but not separate” is a venerable formula whose origins go back to the Council of Chalcedon's confession of 451 that Jesus' humanity and divinity are each distinct realities, yet at the same time united in the one person of the Savior himself. Jesus' singular personhood (= “not separate”) protected the New Testament insight that God really united himself with all humans in their historical and earthly condition through the deeds and words of Jesus himself. God's utterly personal oneness with Jesus was the way in which God became adoptively one with the whole human family and world. But this could only be a true union between God and humans if neither was swallowed up in the other, or reduced to the other. Union (we might say communion as well) presupposes oneness and difference. And so Chalcedon speaks of Jesus' divinity and humanity as remaining distinct. By our adoption in grace through Jesus (Rm 8:14–17) we ourselves are not pantheistically swallowed up in God, but retain our distinctiveness as humans as well.