From a biblical perspective, several arguments are commonly made against OSAS:
1. The Bible Warns Believers About Falling Away
If it were impossible for a true Christian to lose salvation, the repeated warnings against apostasy would seem unnecessary.
Hebrews 6:4-6
"For it is impossible, in the case of those who have once been enlightened, who have tasted the heavenly gift, and have shared in the Holy Spirit... and then have fallen away, to restore them again to repentance."
The people described here appear to be genuine believers because they:
- Were enlightened
- Tasted the heavenly gift
- Shared in the Holy Spirit
Yet they can "fall away."
Hebrews 10:26-29
"For if we sin deliberately after receiving the knowledge of the truth..."
The author warns baptized believers that persistent, willful rebellion can bring judgment.
2. Jesus Said Branches Can Be Cut Off
John 15:1-6
Jesus describes Himself as the vine and believers as branches.
"Every branch in me that bears no fruit he takes away."
Notice Jesus says:
"Every branch in me"
These branches were connected to Christ but were later removed because they failed to remain in Him.
Verse 6:
"If anyone does not abide in me, he is thrown away like a branch and withers."
The condition is clear: believers must continue abiding in Christ.
3. St. Paul Warned Christians That They Could Be Lost
Romans 11:20-22
Paul tells Gentile Christians:
"You stand fast through faith. So do not become proud, but fear."
Then he adds:
"For if God did not spare the natural branches, neither will he spare you."
Paul explicitly warns believers that they too can be cut off if they cease in faith.
4. Paul Feared Being Disqualified
1 Corinthians 9:27
St. Paul writes:
"I discipline my body and keep it under control, lest after preaching to others I myself should be disqualified."
If OSAS were absolutely guaranteed, it would be difficult to explain why Paul feared being disqualified.
5. Scripture Speaks of People Who Left the Faith
1 Timothy 1:18-20
Paul names Hymenaeus and Alexander, who had:
"made shipwreck of their faith."
A shipwrecked faith is not a faith that remained safely saved.
2 Peter 2:20-22
Peter writes:
"For if, after they have escaped the defilements of the world through the knowledge of our Lord and Savior Jesus Christ, they are again entangled in them..."
Then he says:
"the last state has become worse for them than the first."
Peter describes people who truly knew Christ and then turned back.
6. Salvation Is Often Presented as Conditional
Colossians 1:22-23
Paul says Christ will present believers holy and blameless:
"provided that you continue in the faith."
Matthew 24:13
Jesus says:
"He who endures to the end will be saved."
Salvation is linked to perseverance.
7. Judas Iscariot Is a Powerful Example
Judas was:
- Chosen by Jesus
- Sent to preach
- Given authority over demons
- Counted among the Twelve
Yet Jesus later described him as lost (John 17:12).
Those who defend OSAS usually argue Judas was never truly saved, but many Christians find that explanation difficult because of Judas' genuine participation in Christ's ministry.
The Main OSAS Responses
Supporters of OSAS often cite:
- John 10:28-29 ("no one shall snatch them out of my hand")
- Romans 8:38-39 (nothing can separate us from God's love)
- Philippians 1:6 (God will complete His work)
Critics of OSAS generally respond that these passages teach God's faithfulness and protection, but do not eliminate human freedom to reject God.
The View of the Early Church
The earliest Christians generally taught perseverance rather than OSAS. Writers such as:
- Ignatius of Antioch
- Irenaeus of Lyons
- Tertullian
- Cyprian of Carthage
all warned baptized Christians against falling away and emphasized the need to remain faithful to the end.
The doctrine commonly known as "Once Saved, Always Saved" is generally associated with later developments in Protestant theology, especially within some Reformed and Baptist traditions, rather than with the consensus of the first three centuries of Christianity.
Conclusion
The strongest biblical challenge to OSAS is that Scripture repeatedly warns genuine believers:
- to continue in faith,
- to abide in Christ,
- to avoid apostasy,
- and to persevere until death.
Passages such as Hebrews 6, Hebrews 10, John 15, Romans 11, and 2 Peter 2 appear to describe real believers who can fall away. For this reason, Catholics, Orthodox, and many Protestants conclude that salvation is a gift received by grace through faith, but one that must be faithfully persevered in until the end.
In short, the biblical pattern is not merely "once believe, always saved," but rather "remain in Christ, endure in faith, and be saved." (Matthew 24:13).
