Those whom God has accepted in the beloved, and has effectually called and sanctified by his Spirit, and given the precious faith of his elect, can neither totally nor finally fall from the state of grace, but they will certainly persevere in that state to the end and be eternally saved. This is because the gifts and calling of God are without repentance [i.e., irrevocable] and therefore he continues to beget and nourish in them faith, repentance, love, joy, hope, and all the graces of the Spirit which lead to immortality [i.e., eternal life]. And though many storms and floods arise and beat against the saints, yet these things shall never be able to sweep them off the foundation and rock which they are fastened upon by faith. Even though, through unbelief and the temptations of Satan, the sight and feeling of the light and love of God may for a time be clouded and obscured from them, yet God is still the same, and they are sure to be kept by his power until their salvation is complete, when they shall enjoy the purchased possession which is theirs, for they are engraved upon the palm of his hands, and their names have been written in his Book of Life from all eternity.
This perseverance of the saints does not depend on them—that is, on their own free will. It rests upon the immutability of the decree of election, which flows from the free and unchangeable love of God the Father. It also rests upon the efficacy of the merit and intercession of Jesus Christ, and upon the union which true saints have with him. It rests upon the oath of God, and upon the abiding of the Spirit. It depends upon the seed of God being within them and upon the very nature of the covenant of grace. All these factors give rise to the certainty and infallibility of the security and perseverance of the saints.
The saints may, through the temptation of Satan and the world, and because their remaining sinful tendencies prevail over them, and through their neglect of the means which God has provided to keep them, fall into grievous sins. They may continue in this state for some time, so that they incur God’s displeasure, grieve his Holy Spirit, suffer the impairment of their graces and comforts, have their hearts hardened and their conscience wounded, and hurt and scandalize others [= cause others to sin]. By this they will bring temporal judgments upon themselves. Yet they shall renew their repentance and be preserved, through faith in Christ Jesus, to the end.