V. There are several expressions used, in scripture, that give us sufficient ground to conclude, that there was an eternal transaction between the Father and the Son, relating to the salvation of his elect, which, if explained agreeably to the divine perfections, and consistently with the glory of each of these divine Persons, is not only an undoubted truth, but a very important article of faith, as it is the foundation of all those blessings, which are promised, and applied to us in the covenant of grace, in which is all our salvation and our hope. Here let it be considered, that, when we speak concerning a covenant, as passing between the Father and the Son, we understand thereby, that there was a mutual consent between them both, that the work of our redemption should be brought about in such a way, as it was, by our Saviour, when this eternal agreement had its accomplishment; and accordingly the Father is said to _have set him up_, as the Head of his elect, _from everlasting_, Prov. viii. 23. and ordained, that he should execute those offices, which he was to perform, as Mediator, and receive that revenue of glory, that was the result thereof; and the Son, as having the same divine will, could not but consent to do this; and this is called, his eternal undertaking; and, both these together, are styled the eternal covenant, between the Father and him. For the proof of this doctrine, we might refer to those several scriptures that speak of our Saviour as _called_, and _given for a covenant of the people_, Isa. xlii. 6. and _fore-ordained_, 1 Pet. i. 20. to perform the work which he engaged in, in the behalf of his elect; and also consider him as consenting to do every thing for his people, which he did in time, and to stand in every relation to them, that was subservient to their redemption and salvation, which he could not but do, as having the same divine will with the Father; and without his consent, it could not properly be said that there was a covenant between them. We might also prove it from those several scriptures, that speak of him, as _sanctified and sent into the world_, John x. 36. to act as Mediator, _sealed by the Father_, John vi. 27. and receiving a _power to lay down his life, and take it up again_, John x. 18. that so he might answer the great end of our redemption thereby; and also, from his being empowered to execute the offices of a Prophet, Priest, and King; confirmed in his priestly office by _the oath_, Psal. cx. 4. Heb. vii. 21. of the Father, sent by him to execute his Prophetical office to those whom he was to guide in the way of salvation; and, as _God’s King, set on his holy hill of Zion_, Psal. ii. 6. When we consider all these things done, on the Father’s part, as antecedent to Christ’s acting as Mediator, and, at the same time, when we compare them with other scriptures, that speak of the Son, as consenting to do the will of God, or complying with his call, willing to be and do whatever was necessary,