For God's gifts and His call are irrevocable. [He never withdraws them when once they are given, and He does not change His mind about those to whom He gives His grace or to whom He sends His call.] Romans 11:29
The Truth is short and it is sweet, once saved, always saved! Salvation is a gift from our Father, Ephesians 2:8. He choses who receives it and who doesn’t. Many are called, but only a few are chosen to be the Bride of Christ, Matthew 20:16. Our Father knows the beginning and He knows the end, nothing catches our Father off guard. Our peace that passes all understanding is that our Father knew us before we ever were, Psalm 139:16.
Our Father knew what we would do right and wrong before He ever created the earth and He still chose us to serve with Him. He still gave us the gift of becoming one with Him, regardless of our actions. And amen, He never takes our salvation back. There is no such thing as backsliding, where we can lose our salvation. Sure we may mess up. But even in our weakness, even at our worst, our Father is still right here in us. He never leaves us and He never forsakes us, Hebrews 13:5. Not only doesn’t He leave us when we mess up, or take away our salvation, He causes the situation to work out for our good.
We are assured and know that [ God being a partner in their labor] all things work together and are [fitting into a plan] for good to and for those who love God and are called according to [His] design and purpose. Romans 8:28
The Truth causes us to be assured and the Truth sets us free! Once Saved Always Saved!