The doctrine known as Once Saved, Always Saved teaches that once a person accepts Jesus Christ as Savior, his salvation is secured because it is impossible for God to fail in what He sets out to do. This method of thinking asserts that once one is truly saved, he is saved forever. However, if it is possible for a person to fail to enter God's kingdom, it is not God who has failed. The doctrine generally operates on the belief that God's sole purpose is to save people, overlooking other aspects of His purpose, such as the ongoing nature of His creation and the importance of free moral agency. Those who believe in this doctrine do not fully understand the responsibilities to God and man, nor the aspects of His mercy, love, and justice in governing His creation. It would not be merciful love to allow a rebel to continue in misery, causing problems for others forever.

The idea of eternal security, often termed "once saved, always saved," is foreign to the Bible. It is puzzling how such a doctrine could develop when the Bible repeatedly comments, warns, and advises that we can lose it all through sin. Certain portions of Paul's writings, like Romans 2:1-16, are uncomfortable for those who hold this view, as they expound upon the judgment of God and emphasize that the doers of the law will be justified. Failure to keep God's law is sin, and those who sin will be judged by the law, facing the wages of sin, which is death. Jesus Himself warns that unless we repent, we will perish. For those who believe in eternal security, II Peter 1:10-11 delivers a significant challenge by exposing the falsehood in this teaching. It states a simple command to validate our calling and election by producing fruit. We live in spiritually dangerous times, and the way to stay on course is to keep on growing. If we grow, our salvation is assured, as God is faithful and has promised us salvation if we remain faithful. Jesus Christ earnestly desires to present us holy, blameless, and irreproachable to the Father in His Kingdom, but we must uphold our part of the covenant. We must continue in the faith, remain grounded and steadfast, keep on growing, and hold fast to the hope of our resurrection and eternal life. We must not take God's salvation for granted, assuming eternal security without obedience to God's way of life, but instead strive to make our calling and election sure.

The doctrine of Eternal Security, often referred to as "Once Saved, Always Saved," is a foundational belief in Protestantism, asserting that once a person accepts Jesus Christ as their personal Savior, their salvation is assured regardless of subsequent actions. This concept suggests that God is bound to grant them eternal security under His grace, no matter what occurs afterward. However, this idea is viewed as deceptive and contrary to the truth revealed by God. It is seen as a lie akin to the Immortal Soul Doctrine, propagated by the devil since the Garden of Eden, implying that God's threat of death for sin cannot be enforced. This belief in eternal security is challenged by the understanding that God's grace does not perpetually cover unrepentant sin. Just as a criminal absolved of one crime can still be guilty of future offenses, a person who continues in sin risks losing the promised salvation by defying God's will. Scriptures emphasize that willful sin, done in rebellion against God, nullifies the sacrifice of Jesus Christ, bringing judgment upon the sinner. God, being pure and holy, will not accept those who persist in sin, expecting them to approach Him with an attitude of guaranteed security. The Bible repeatedly warns against the notion of eternal security, indicating that salvation can be lost if one does not remain diligent. In II Peter 1:10-11, believers are urged to make their calling and election sure through diligent effort, with the consequence of stumbling and missing entrance into the Kingdom of God if they fail to do so. This command reflects the necessity of ongoing action on the part of believers, as God has already provided His calling, election, Holy Spirit, repentance, forgiveness, truth, and grace. Without reciprocal effort, one can fall away. The urgency to counter false teachings and apostasy, as seen in the early church, underscores the rejection of eternal security. False teachers, influenced by the devil, aim to lead believers astray, which would be pointless if salvation were irrevocably secured. Peter's writings, intended for all true Christians across time, stress the importance of safeguarding against deception by continuously validating one's calling through bearing fruit and growing in faith. Jesus Christ Himself taught that failing to bear fruit results in being cut off, reinforcing that abiding in Him is essential to avoid judgment. Ultimately, the path to ensuring salvation lies in persistent growth, holy conduct, and godliness, as God is faithful and longsuffering, desiring none to perish. However, there is a limit to His patience, and judgment awaits those who do not meet His standard. By diligently adding to their faith and producing fruit, believers can validate their calling and election, ensuring they remain on the right path and avoid falling into deception or sin that could lead to the loss of salvation.