Eternal Security before Eternal Life is not Biblical
Salvation by Baptism
The Doctrine of eternal security advocates tend to mislead people about eternal life. Baptism is forever; it cannot be lost or undone. Therefore, the phrase “once saved always saved” should be “once baptized always baptized.” Baptism saves a person through the resurrection of Christ. (1 Peter 3:21) The blood of Christ caused God to pass over all past sins of the world. (Romans 3:25) Therefore, baptism saves a person from their past sins, but not their future sins. The security from past sins provided by baptism is eternal. However, a person does not have eternal security, unrelated to baptism, until they have eternal life.
Salvation after Baptism
After baptism, the process of salvation by doing the will of the Lord begins. He who has believed and has been baptized shall be saved. (Mark 16:16) Having been justified, we shall be saved. (Romans 5:9) Our spirit might be saved in the day of the Lord Jesus. (I Corinthians 5:5 The word of the cross to us who are being saved is the power of God. (I Corinthians 1:18) We are a fragrance of Jesus to the Lord among those who are being saved. (2 Corinthians 2:15) Some did not receive the love of the truth so that they might be saved. (2 Thessalonians 2:10)
It is clear the people who endure until the end will be saved. (Matthew 10:22, 24:13, Mark 13:13) Moreover, Peter has the following message for people saved by baptism. Since Christ suffered in the flesh, arm yourselves with the same purpose, because those who have suffered in the flesh have ceased from sin, so that you live the rest of your time in the flesh to the will of the Lord. (1 Peter 4:1-2)
Salvation by the Will of the Lord
Eternal security advocates teach shortcuts to doing the will of the Lord. Whoever does the will of God who is in heaven will enter into it. (Matthew 7:21) Therefore, you need endurance, so that when you have done the will of the Lord, you may receive eternal life as promised. (Hebrews 10:36) The will of God is what is good and acceptable and perfect. (Romans 12:2) For this is the will of God, your sanctification, that is, that you abstain from sexual immorality. (1 Thessalonians 4:3) For such is the will of the Lord that by doing right you may silence the ignorance of foolish men. (1 Peter 2:15) Therefore, you shall keep His statutes and judgments, by which a man may live if he does them. (Leviticus 18:5)
When a man walks in God’s statutes and ordinances, he is righteous and will surely live. (Ezekiel 18:9) If a man executes His ordinances and walks in His statutes, he will surely live. (Ezekiel 18:17) When a man has observed all His statutes and done them, he shall surely live. (Ezekiel 18:19) If a man turns from all his sins, which he has committed and observes all His statutes and practices righteousness and justice, he shall surely live; he shall not die. (Ezekiel 18:21) When a man considers and turns away from all his transgressions, which he has committed, he shall surely live; he shall not die. (Ezekiel 18:28) If a man walks by the statutes, which ensure life without committing iniquity, he shall surely live; he shall not die. (Ezekiel 33:15) Whoever does the will of the Lord your God will live forever. (1 John 2:17)
The Will of the Lord
Eternal security advocates reject the way of the Lord. The will of the Lord and the way of the Lord are closely related. A person keeps the way of the Lord by doing righteousness. (Genesis 18:19) The will of God is what is good and acceptable and perfect. (Romans 12:2) The will of the Lord is your sanctification; that is, that you abstain from sexual immorality. (1 Thessalonians 4:3) The will of God is that we live by doing what is right. (1 Peter 2:15) People who suffer for the will of God will entrust their souls to Him in doing what is right. (1 Peter 4:19) The Bible makes it clear that the way of the Lord is certainly in the will of the Lord.
All unrighteousness is sin. (1 John 5:17) Saul, also known as Paul, filled with the Holy Spirit, fixed his gaze on Elymas, and said, “You who are full of all fraud and deceit, you son of Satan, you are an enemy of righteousness, will you not cease to make crooked the straight ways of God? (Acts 13:9-10) Therefore, do not believe in Satan when he tells you that you do not have to do all righteousness, because some righteousness has been abolished.
Apostasy After Baptism
Eternal security advocates want people to believe apostasy cannot happen. However, the Spirit explicitly says that in the last times some will fall away from the will of the Lord. They will instead obey spirits that tell lies. They will follow the teachings of demons. (1 Timothy 4:1) During that time, many believers will fall away. (Matthew 24:10) They will not allow the will of God deep into their souls. They keep it for only a short period. When persecution or trouble comes because of the teaching they accepted, they give up. (Mark 4:17)
When people leave the way of Christ, can you make them change their lives again? People who once learned the truth received God’s gift and shared in the Holy Spirit. They hear God’s good message and see the great power of his new world. Once they leave it all behind, it is not possible to make them change again. That is because those who leave Christ are nailing him to the cross again, shaming him before everyone. (Hebrews 6:4-6)
The popular man-made doctrines of once saved always saved, eternal salvation and eternal security erroneously refer to eternal life. Remember, it is the person who endures to the end that is saved (inherits eternal life). You certainly cannot lose what you have not inherited. However, according to the bible, you can lose eternal life.