Eternal security


Eternal security, also known as "once saved, always saved", is the belief that from the moment anyone becomes a Christian, they will be saved from hell, and will not lose salvation.
This belief is held by proponents of free grace theology who believe that an individual will inherit the kingdom of heaven if they have been regenerated; while Reformed theology also teaches this doctrine of the perseverance of the saints, it holds that one's continued belief in Christ and good works are evidence of one's saving faith and that if one does not bear this fruit, he/she was never truly regenerated to begin with.
Catholic, Methodist, and Eastern Orthodox theology hold to synergism with respect to salvation and view the doctrine of eternal security as heretical, instead teaching that one's one's salvation is conditional on one's continued faith, good works, sanctification, and avoidance of sin.

Views

Theology affirming the doctrine of Eternal security

Reformed Christianity

In Calvinism, eternal security is a logical consequence of the doctrine of perseverance of the saints, according to which true Christians will persevere in good works and faith. Because faith is God's perfect gift it will inevitably produce perseverance in faith and good works. Thus condemnation to hell because of sin, unbelief, or apostasy is not possible for true Christians.

Free grace

says that anyone who believes in Jesus Christ will go to heaven regardless of any future actions—including future sin, unbelief, or apostasy—though Christians who sin or abandon the faith will face God's discipline.

Theology rejecting the doctrine of Eternal Security

Catholicism

In Catholicism, Christians do not have eternal security because they can commit a mortal sin. The Church teach that Christians are subject to the cleansing torment of purgatory before entrance into heaven.

Classical Arminianism and Wesleyan Arminianism

The Arminian view, inclusive of the Classical Arminian position and Wesleyan-Arminian position, opposes any concept of eternal security, holding that a true Christian can fall from grace and be condemned to hell.