Scripture is clear that once you become a child of God through faith, you can never lose your salvation. However, eternal security continues to be discussed, doubted, and debated within Christian circles. So let's take a deeper look.
The following article has been written by David Novitsky. Shared by permission.
If salvation could be lost or undone once spiritual rebirth has already occurred in a believer, God would then have to do numerous things the Bible never speaks of or teaches Him doing to anyone! Surely the scriptures would clearly illustrate these things if it were true?
Follow along...
God would have to pass me back into death from the eternal life that He already gave me.
God would have to remove me spiritually from being seated with Christ in heavenly places.
God would have to "un-join" me from Christ.
God would have to "un-wash" me from the blood of Jesus that already washed me.
God would have to "un-seal" me from the Holy Spirit.
God would have to "re-place" my sins back onto me that He already removed as far as the east is from the west.
God would would have to now remember my sins that He already "remembers no more".
God would have to break His own covenant He made with His Son and therefore would make Him a liar (and we know God cannot lie).
Follow along...
God would have to pass me back into death from the eternal life that He already gave me.
God would have to remove me spiritually from being seated with Christ in heavenly places.
God would have to "un-join" me from Christ.
God would have to "un-wash" me from the blood of Jesus that already washed me.
God would have to "un-seal" me from the Holy Spirit.
God would have to "re-place" my sins back onto me that He already removed as far as the east is from the west.
God would would have to now remember my sins that He already "remembers no more".
God would have to break His own covenant He made with His Son and therefore would make Him a liar (and we know God cannot lie).
God would have to "un-adopt" me as His child.
God would have to leave me and forsake me even though He promised to never do so (again God cannot lie).
God would have to "pluck me" from His own hand in which He already promised nothing could ever do!
God would have to "take back" the free gift He already gave to me.
God would have to "un-do" the righteousness He already imputed to me from Jesus.
God would have to fail to raise me on the last day going back on His promise to do so (God cannot lie).
God would have to fail in completing the good work in me He already promised to complete.
God would have to ignore all the prayers of His Son on our behalf who is interceding for us as believers.
God would have to ultimately reverse the once for all sacrifice made by His own Son and ignore it like it never happened.
I could go on for days with this! But hopefully you get the picture.
Titus 3:5 KJV
Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost; 3:6 Which he shed on us abundantly through Jesus Christ our Saviour; 3:7 That being justified by his grace, we should be made heirs according to the hope of eternal life.