This is the story of my sister-in-law and how OSAS can't possibly apply here.
 
My husband grew up in a completely non-Christian family (they still all are), but when his sister was young (about 12), she went with a friend to a Christian church service and at the end of the service, went forward and accepted Jesus.
 
She then came home and excitedly told her parents and brother what she had done, and they teased her mercilessly.  She never went back to the church with her friend because she was so humiliated and hurt by her family.
 
The years went by and she started exploring Buddhism, new ageism, and other religious types.  When I came into the family (when she was 18), I was a Christian and she argued with me about my beliefs.  (I met her brother who really liked me so he went to church with me occasionally, but was not a strong Christian.)
 
Anyway, over the past 27 years she and I have had MANY discussions about God and religion, etc.  She does not believe in Jesus - in fact, she is not even sure she believes there is a God.  I have asked her about her conversion experience when she was young, and she says it didn't mean anything, and was just something she tried.
 
I don't think there is any way that anyone can say her conversion experience at 12 yrs old was not real.  I believe it was very real, and had she had an understanding family and a little support to keep going to church, I believe she would be a committed Christian today.
 
Still, I don't see how she can be OSAS as she has outright rejected Jesus in every conversation I have had with her over the years.  I wonder how much "environment" really plays into our belief systems - and how responsible her family will be to God on judgement day for the damage they did to her.
 
Only God know each heart, for sure - so we can't judge - but I guarantee you - if OSAS is true, she is going to be REALLY surprised if she gets raptured - LOL!
 
On a serious note, if any of you wish to pray for her, her husband, and my in-laws salvation, it would be greatly appreciated.  Thank you!  I have done it for almost 30 years and will continue as long as I have breath.
 
Thanks for listening.
 
Diane Chapman