Ok I’ll try to explain it. But to make it clear… I DO NOT believe in OSAS.
OSAS (Once Saved Always Saved) is the P in TULIP (Perseverance of the Saints) (in Hyper-Calvinism)
If you follow the logical ends of each of the 4 points then the P is required. Let me show the logic (rereading it I seem a bit harsh but I don’t know how to word it nicer maybe I’m misrepresenting it, but I haven’t seen anything to contradict my thoughts in all the reading I’ve done.):
T Total Depravity: Because of the Fall, Man is totally incapable of doing
anything good at all. That means no thinking good things, saying them, nothing. Everything man is capable of is sinful.
U Unconditional Election : Since Man is completely helpless to do anything good, he certainly can’t choose something so awesome as following/trusting God. Since all men are hopeless, God chooses who will be saved with no consideration at all as to who the men are or are not. There are no conditions man must meet to be saved. Man couldn’t meet them if he wanted to. So, God chooses His elect with divine randomness.
L Limited Atonement : Since God has only chosen to save some, there it no point at all in having His Son die for people who are not elect. Therefore, Jesus died only for the Elect. Why should He suffer unnecessarily?
I Irresistible grace: Since man is helpless to do anything (see T) God must have a way to get His elect to follow and obey Him. So God sends His Holy Spirit to overpower the elect to make them obey and follow Him. The elect will have no choice because they
cannot choose anyhow. If they are elect they will eventually become Christians and
love and obey God no matter what happens in their lives, they
cannot resist. If they are not elect they do not have any ability to chose God. Period.
P Perseverance of the Saints : So here is the OSAS part. Man can do nothing Good, God chose to save some of these men through atonement, God is Divine and in charge of these things Man cannot resist. So if someone believes all these things it only follows that people cannot lose their salvation anymore than they can gain it themselves. If God says it, it is done.
although I would hear them say to commit a sin is wrong but they seem to as if commiting a sin no longer matters.
after researching this once saved always saved I have come to believe that Once Saved Always saved is another method of promoting Sin.
To tell someone who believes these things that they are advocating sin is silly. According to this, sin is all people are capable of if they are not elect and if they are elect, God will make them not sin. they haven’t got any choice in the whole matter.
To be fair, the above is an extreme version of Calvinism and most people do not believe all five points to those extremes BUT you can easily see how OSAS can be derived from it. I think most people who believe OSAS were never taught all I just typed. They get bits and pieces from here and there. It doesn’t ring false because the pieces they get don’t seem to contradict the God they have been taught about. They believe God is sovereign, Man cannot do good without God, Jesus Died for us, God chose them, God doesn’t make mistakes. How could you lose salvation if God chose you and God doesn’t make mistakes? They are not being illogical, though I think their logic is based on incomplete information. They are not advocating displeasing God.