Once Saved, Always Saved
The doctrine “once saved, always saved” holds that the justified believer can never again lose his salvation, whatever his sins to come: faith received once would set him beyond danger for ever. Scripture, on the contrary, calls to persevere to the end, warns the believer that he can fall, and names sins that close the Kingdom.
Persevering to the end
The salvation promised goes to the one who holds firm to the end. “He who perseveres to the end will be saved.” Matthew 24:13 The promise hangs on perseverance, which would make no sense if salvation were secured in advance and for ever. The same word returns at the close of the trials: “Be faithful unto death, and I will give you the crown of life.” Revelation 2:10 The crown goes to the one who remains faithful unto death.
The warning of falling
Scripture warns the believer himself against falling. “Let anyone who thinks he stands take heed lest he fall.” 1 Corinthians 10:12 The warning is addressed to one already standing in the faith: one is not warned of a fall that cannot happen. Hebrews describes those who, after being enlightened, having tasted the heavenly gift and received the Holy Spirit, then fall away: “It is impossible to restore them again to repentance.” Hebrews 6:4-6 These had received grace and lost it. The same book warns that sin committed wilfully after knowing the truth awaits only a dreadful judgement: “There no longer remains a sacrifice for sins, but a fearful expectation of judgement.” Hebrews 10:26-27 And one who, having escaped the defilements of the world through the knowledge of the Lord, is again entangled in them, falls lower than at the start: “Their last state has become worse than the first.” 2 Peter 2:20
The branch cut off
Christ presents himself as the vine and believers as his branches, and every branch that ceases to bear fruit is taken away. “Every branch in me that does not bear fruit, he takes away.” John 15:2 The branch cut off was joined to the vine before being removed. “If anyone does not remain in me, he is thrown out like a branch and withers; then it is gathered, thrown into the fire, and burned.” John 15:6 Scripture takes up the image again with the branch grafted onto the olive tree: held by faith, it can be cut off if it does not remain. “You stand fast through faith. Do not be proud, but fear; you too will be cut off.” Romans 11:20-22
Blotted from the book of life
The names of the saved are written in a book, and that inscription can be blotted out. The promise made to the victor supposes it: “The victor will be clothed in white garments, and I will not blot his name from the book of life.” Revelation 3:5 To promise not to blot out the name of the one who conquers amounts to saying that the name of the one who does not conquer can be. The threat is stated plainly at the close of the book: “God will take away his share in the tree of life and in the holy city.” Revelation 22:19
The sins that close the Kingdom
Some sins exclude from the Kingdom the one who commits them, and Scripture says so to believers already received into the Church. It lists these works and concludes: “Those who do such things will not inherit the kingdom of God.” Galatians 5:21 The same warning is repeated elsewhere with the same firmness: “Do not be deceived: neither the immoral, nor idolaters, nor adulterers will inherit the kingdom of God.” 1 Corinthians 6:9-10 Scripture also distinguishes a sin that makes the soul lose its life from one that does not kill it: “There is a sin that leads to death; there is a sin that does not lead to death.” 1 John 5:16-17 The Old Testament already taught it: the righteous man who turns from his righteousness dies in his sin, and his past righteous deeds do not save him. “If the righteous turns from his righteousness and commits iniquity, all the righteous deeds he has done will be forgotten.” Ezekiel 18:24
The fear of Paul
Saint Paul himself did not think he stood beyond danger. He writes that he treats his body hard for fear of being rejected after preaching to others: “I treat my body hard, for fear that after preaching to others I myself should be rejected.” 1 Corinthians 9:27 He commands the faithful to work out their salvation in fear: “Work out your salvation with fear and trembling.” Philippians 2:12 And he confesses he has not yet reached the goal, but still presses on toward it: “Not that I have already reached the goal, but I press on to lay hold of it.” Philippians 3:12 Such fear would be empty if salvation, once received, could no longer be lost.
What the promises guarantee
This doctrine rests on the promises where Christ keeps his own. “I give them eternal life; they will never perish, and no one will snatch them from my hand.” John 10:28 The promise rules out any power that would tear us from God by force; it leaves whole our freedom to turn away from him ourselves. Likewise, the list of what cannot separate us from God names forces outside ourselves: “Neither death, nor life, nor angels, nor any other creature will be able to separate us from the love of God.” Romans 8:38-39 No creature separates us from Christ; our own sin, freely chosen, still can. God never fails on his side: he keeps his own, calls them and strengthens them. Salvation is thus kept in firm hope, resting on his fidelity, and in the prayer that obtains the grace of final perseverance.