Francis Turretin, On the Atonement of Christ (from Institutio Theologiae Elencticae), tr. James R. Willson (Reformed Dutch Church board ed.).

He must be a Mediator, a peace-maker, to take away the enmity of the parties and reconcile us to God. He must be a Priest and victim, to substitute himself in our room, and make atonement, by enduring the penal sanction…