As evangelicals debate the merits of Calvinism and Arminianism, the one point where proponents of either side often abandon their system is in the area of eternal security. However, evangelicals are not all in agreement over this issue, and even those who affirm that one cannot lose their salvation due to sinful actions may nevertheless believe that one can lose their salvation due to apostasy (a willful rejection of faith in Christ).
Even though we are made in the image of God, we sin and are alienated from God. Romans 3:23 tells us that, “For ‘ALL’ have sinned and fallen short of the glory of God.” Romans 10:3, “As it is written: None is righteous, no, not one;” and “we are all as an unclean thing, And all our righteousnesses are as filthy rags;” as Isaiah 64:6a states. No one can live a sinless life and we can do nothing to earn our salvation. The only way to obtain salvation is through God’s Son, Jesus Christ. (John 14:6) It would be logical to conclude that God would not give something, only to take it away because we are unworthy. We will always be unworthy. “Our salvation is secured in Christ, and nothing can separate us from the love of Christ (Rom 8:31–39); yet our response to this truth brings our assurance. Eternal security is an objective truth, but our response to it is experiential and subjective. It is based on the work of Christ (Heb 7:25), the witness of the Spirit (Rom 8:14–17), and our obedience (1 John 5:11–13). God has promised to keep us from stumbling (Jude 24), having sealed us until the day of redemption (Eph 4:30). Thus, we are responsible to persevere and hold on to God. Ultimately our security in Christ comes because He has a hold on us (John 10:28–30).”
We are sealed according to Ephesians 4:30 tells us, “And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption.” When a letter is mailed, one person seals the letter and the recipient is the only person allowed to open the letter. “In our case, God is both sender and recipient, so only God could break that seal; and He has promised to deliver us safely to heaven.”
When a person truly accepts Christ, people will know by the fruit that they bare. (Matthew 7:16) Bear fruit in keeping with repentance. (Matthew 3:8) (Repentance means to turn from our sin, never to return.) Apostates claim to know Jesus but are not willing to make the necessary sacrifices such as repentance or bearing fruit. One may argue that all Christians return to certain sins, but there is a difference in trying to keep away from sin with Jesus and giving in to sin, continuing to live in sin without Jesus. Therefore, apostasy is not a loss of salvation; it indicates that salvation was never secured to begin with.
In conclusion, if we believe our salvation is taken away every time we sin, and we turn around and become “saved” again, that would be crucifying Jesus repeatedly. Romans 6:10 says, “For the death he died he died to sin, once for all, but the life he lives he lives to God.”
Dockery, D. S, T. C Butler, C. L Church, L. L Scott, M. A Ellis Smith, and J. E. White. Holman Bible Handbook. Nashville, 1992.
Ryrie, C. C. A Survey of Bible Doctrine. Chicago, 1972.
 D. S. Dockery, Butler, T. C., Church, C. L., Scott, L. L., Ellis Smith, M. A., White, J. E., & Holman Bible Publishers (Nashville, T. (1992). Holman Bible Handbook (833). Nashville, TN: Holman Bible Publishers.
 C. C. Ryrie, (1972). A survey of Bible doctrine. Chicago: Moody Press.