I'm not a great theologian here, but...
It seems to me that an illustration given in an earlier post....
http://www.baptistboard.com/showpost.php?p=785863&postcount=95
gives a fairly representative picture of OSAS.
And for some strange reason, it appears that some individuals in this thread have totally ignored it. I wonder...why?
In other words...
If Jesus replaced the old, corruptible heart (soul)...with a newly regenerated heart (soul)...then why would He (at some time in the future) pull out that heart (soul) that He himself had put in, and the Holy Spirit had taken up permanent residence within?
Wouldn't that in effect be saying...God, Jesus, Holy Spirit is not capable of securing children/heirs/joint heirs unto His kingdom?
For I believe.....
In my carnal self...there was nothing I could do...short (or long, for that matter) of admitting...
Without the Mercy and Grace of God I was lost and condemned to eternal separation from Him.
Furthermore, in my sinful condition condition I did not deserve His Mercy or His Grace, but He offered both freely.
And strangely enough...
When I realized that, I...
1. Realized
.....(past tense).....that it was because of His Mercy that He did not give me what I deserved (death and permanent separation from Him).
2. Confessed
.....(past tense).....of my sinful condition.
3. Asked for forgiveness of my sins
.....(past tense).....and asked Jesus to come into my heart and cleanse/regenerate my soul.
4. Accepted
.....(past tense).....His Grace by Faith in Him alone.
5. Turned
.....(past tense).....from my previous actions in life.
6. Continue
.....(present, and future, tense).....to live for Him throughout my physical life on this earth, even though there are times that I fail Him.
7. Look forward
.....(future tense).....to the day that I will bow before Him in His presence and praise Him forever.
Therefore, I have no need to debate OSAS, because I know within my heart and soul without any shadow of a doubt that Jesus' precious blood covers any sin that I have committed, or will ever commit, for....
Ephesians 2:8 (Holman Christian Standard Bible)
For by grace you are saved through faith, and this is not from yourselves; it is God's gift --