Does Jesus save or merely make savable?

The perfection of Christ’s work of salvation—from the reality of God’s eternal decree, the deadness of man in sin, the effectiveness of His substitutionary death in behalf of the elect, to the application in time by the Spirit of God—is the sole and only basis of any consistent doctrine of perseverance or “eternal security.” Every system that reduces the work of Christ to the hypothetical level must abandon the solid rock of assurance that comes only from recognizing His awesome power. Reduce Jesus to the role of making us “savable” and you no longer have the slightest reason to believe that, once a person is in Christ, they will remain there. But strip man of his pretended autonomy, recognize his utter dependence and God’s unparalleled power, and the truth of the eternal nature of Christ’s saving work (and its inability to fail) will find a firm and necessary foundation. My hope is built on nothing less than Jesus blood and righteousness: He will never fail to do the Father’s will, and that is my hope (John 6:38–39).

(Dr. James White - Debating Calvinism, p. 406)