Q. 40. Why was it requisite that the Mediator should be God and man in one person?
A. It was requisite that the Mediator, who was to reconcile God and man, should himself be both God and man, and this in one person, that the proper works of each nature might be accepted of God for us, and relied on by us as the works of the whole person.
If the Mediator must be God and man in one person, did then the Son serve as mediator prior to his incarnation? If so, how?