The Covenant of Redemption

"Thus in a marvelous way the doctrine of the covenant maintains God's sovereignty in the entire work of salvation. It far surpasses the covenant of works to the degree that Christ exceeds Adam. God's threefold being is manifest much more clearly in re-creation than in creation. It is the Father who conceives, plans and wills the works of salvation; it is the Son who guarantees it and effectively acquires it; it is the Spirit who implements and applies it. This entire work of salvation is God's work exclusively; nothing derives from humans, it is all pure grace and undeserved favor."

Herman Bavinck, Reformed Dogmatics: Abridged in One Volume., page 402.