WLC Q.39: Why was it requisite that the Mediator should be man?
It was requisite that the Mediator should be man, that he might advance our nature, (Heb. 2:16) perform obedience to the law, (Gal. 4:4) suffer and make intercession for us in our nature, (Heb. 2:14, Heb. 7:24–25) have a fellow-feeling of our infirmities; (Heb. 4:15) that we might receive the adoption of sons, (Gal. 4:5) and have comfort and access with boldness unto the throne of grace. (Heb. 4:16)