The Only Possible Mediator

"Why must he be very man, and also perfectly righteous?  "Because the justice of God requires that the same human nature which hath sinned, should likewise make satisfaction for sin; and one, who is himself a sinner, cannot satisfy for others."  "Why must he in one person be also very God?         "Why must he be very man, and also perfectly righteous?  "Because the justice of God requires that the same human nature which hath sinned, should likewise make satisfaction for sin; and one, who is...