by Trent
Circumcision is a cutting away and removing ... and like salvation is a one-way trip. You can't reverse a circumcision. Once it is done, it is done. In fact, it is impossible to reverse that. Circumcision is permanent, just like salvation. Paul is not being careless when He compares salvation to circumcision:
Colossians 2:13
When you were dead in your transgressions and the uncircumcision of your flesh, He made you alive together with Him, having forgiven us all our transgressions,
The old is gone, and I have become new. So has every Christian, whether or not they understand it.
Our lives are hidden in Christ. (Colossians 3:3) ... We are given the Holy Spirit that dwells within us (Romans 8:9.) We belong to God (John 8:47, Romans 14:8) ... this too is a one-way ... NON-reversible process. Our quickening by the Spirit is permanent and irrevocable.
2 Corinthians 5:17
Therefore if anyone is in Christ, he is a new creature; the old things passed away; behold, new things have come.
A sheep that is under the care of the Good Shepherd is in good hands. It is folly to think that the Shepherd that guards our souls is careless or some fly-by-night hired-hand that is lacking about tending the flock He is given. We shouldn't flatter ourselves as sheep that are capable of overcoming the Shepherd with our rebellion. By this, I mean it is possible that we will often act like goats and go our own way, but it is not possible for the Good Shepherd to fall asleep on the job or knuckle under to our waywardness. It is written that when we are faithless, He remains faithful. (2 Timothy 2:13.)
2 Timothy 1:12b
I know whom I have believed, and am convinced that He is able to guard what I have entrusted to Him for that day.
My confidence is in the Shepherd's ability to keep me, not in my ability to stay. And with this confidence, I know that it is impossible for any Christian to loose their salvation.
For it is the Fathers will that all come to repentance and salvation in His Christ. ~ Jesus [Letters from God and His Christ - Volume 1 ~ The Pearl]