Why was it requisite that the Mediator should be God and man in one person?

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,[1] as the works of the whole person.[2]

1. Matt. 1:21, 23

   She will bear a son, and you shall call his name Jesus, for he will save his people from their sins.”
   
   “Behold, the virgin shall conceive and bear a son,
   and they shall call his name Immanuel”
   
   (which means, God with us).

   
   Matt. 3:17

   . . . and behold, a voice from heaven said, “This is my beloved Son, [1] with whom I am well pleased.”

   
   Heb. 9:14

   . . . how much more will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, purify our conscience from dead works to serve the living God.

   
   
2. I Peter 2:6

   For it stands in Scripture:
   
   “Behold, I am laying in Zion a stone,
   a cornerstone chosen and precious,
   and whoever believes in him will not be put to shame.”

   
   

Question 40, Westminster Larger Catechism.

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