I don’t believe your views on OSAS. There is no such thing as once saved always saved. If that was true no one would backslide and the Lord wouldn’t give us so many warnings to stay saved. Just 2 of many scriptures to this effect are Jude 1:.5-6. & 20-21. What do you think ?
Neither these two references nor any others from the New Testament can dispute OSAS. The context of Jude is the sin and doom of Godless men. Verse 5 speaks of the time when God culled the unbelievers from out of the people He brought out of Egypt. He was talking about believers and unbelievers, not about people who had lost their salvation. And Besides, OSAS was only promised to the Church, not to people in Old Testament times. And verse 6 is about fallen angels, where the same is true. It’s not about humans who lost their salvation.
In Jude 1:20-21, the Lord’s brother was encouraging believers to “keep the faith” and not be influenced by the false teachers who divide us, referring to verses 18-19. There’s no mention of losing their salvation.
The Lord doesn’t give us any warnings to stay saved because the Holy Spirit is sealed within us from the moment we believe to the day of redemption as a guarantee of our inheritance (Ephesians 1:13-14, Ephes. 4:30) and there’s nothing anyone can do to change that (John 10:27-30, Romans 8:38-39).