Without ceasing to be all that he was and is as the Second Person of the Holy Trinity, the eternal Son of God took into union with himself in the one divine Person that which he had not possessed before–even a full complex of human attributes–and became fully and truly man for us men and for our salvation. Jesus of Nazareth was and is that God-man. . . . The Incarnation should be viewed as an act of addition and not an act of subtraction.
Robert L. Reymond, A New Systematic Theology of the Christian Faith, 2nd ed. (Nashville: Thomas Nelson, 1998), 546.