THE NEW BIRTH IS BOTH IRRESISTIBLE AND IRREVERSIBLE!
Salvation is not a REWARD given to those who have ‘PERFORMED’, but a FREE GIFT given to those who CANNOT PERFORM! It is something that you have RIGHT NOW, not something you will receive LATER, based on your performance! May the good Lord burn the truth of this verse into our hearts – “For BY GRACE are ye saved through faith; and that NOT OF YOURSELVES: it is the GIFT OF GOD: Not OF WORKS, lest any man should boast!” [Eph 2:8,9].
“Regeneration is a radical and supernatural change of the inner nature, through which the soul is made spiritually alive, and the new life which is implanted is immortal. And since it is a change in the inner nature, it is in a sphere in which man does not have control. No creature is at liberty to change the fundamental principles of its nature, for that is the prerogative of God as creator. Hence nothing short of another supernatural act of God could REVERSE this change and cause the new life to be lost!
The born-again Christian can no more lose his sonship to the heavenly Father than an earthly son can lose his sonship to an earthly father. The idea that a Christian may fall away and perish arises from a wrong conception of the principle of spiritual life, which is imparted to the soul in regeneration.” – A.W. Pink
If Christ had gone to the cross just to give us life, conceivably we could commit a sin and lose that life; but because He has given us ETERNAL LIFE, by the very nature of that which is eternal, it must be forever and ever. “He that believeth on the Son hath everlasting life” [Jn. 3:36]. Not WILL have or MAY have (IF he behaves), but HATH RIGHT NOW! [see also 1 Jn 5:13].
The ‘new birth’ is a spiritual resurrection, a passing from death unto life [Jn 5:24]. Writing to the saints in Ephesus the apostle Paul said, “But God, who is rich in mercy, for His great love wherewith He loved us, even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;) and hath raised us up together, and made us sit together in heavenly places in Christ Jesus; [Eph. 2:4-6; see also Col. 2:12]. This is the resurrection that Jesus spoke of to Martha before He raised Lazarus from the dead. He said, “I am the resurrection, and the life: he that believeth in Me, though he were dead, yet shall he live: And whosoever liveth and believeth in Me shall never die [Jn. 11:25,26].
According to these verses, those whom God hath made alive, have experienced the resurrection of their souls. The Bible calls this the ‘First Resurrection’ [Rev. 20:5]. Upon those who have experienced the First Resurrection the ‘Second Death’ has no power [Rev. 20:6]. The second death being eternal damnation in Hell [Rev. 20:14].