"Israel has been saved by the LORD with an everlasting salvation; you will not be put to shame or humiliated to all eternity." (Isaiah 45:17)Our salvation is an everlasting salvation. Jesus did not only save us for today, but His salvation lasts for all eternity. This was not the case in the Old Testament. Under the old law of offerings and sacrifices, they provided momentary forgiveness for sins, but they did nothing to deal with the sin nature within. Therefore, the sacrifices had to be offered day by day to atone for the new sins committed each day. The writer of Hebrews said, "Every priest stands daily ministering and offering time after time the same sacrifices, which can never take away sins; but He, having offered one sacrifice for sins for all time, SAT DOWN AT THE RIGHT HAND OF GOD." (Hebrews 10:11-12) Jesus not only paid the penalty for our sins, but He also took away our sins. Not only are our sins forgiven, but our sin nature had been put to death through the work of Jesus on the cross.
We no longer have a sin nature; we are no longer sinners. Jesus came to free us from our sinful nature. Paul said, "knowing this, that our old self was crucified with Him, in order that our body of sin might be done away with, so that we would no longer be slaves to sin; for he who has died is freed from sin." (Romans 6:6-7) We have not received a salvation that lasts only until our next sin. We have received a salvation that is complete and eternal. We have been changed on the inside. Our sinful nature had been removed, our hearts have been circumcised, and we have been given the power to live as children of God. We are new creations! So, the next time you begin to worry that maybe you "lost" your salvation, remember that that thought is not from the Father, for He saved us once and for all!