even in non-OSAS the person is saved at the moment of belief and surely does receive everything salvation is now in this life,...
1 Corinthians 15:1-2 NASB
Right. Which includes Eternal Life (and as the OP points out as an irrevocable gift) not a chance at Eternal Life if you mature enough in your Earthly life and bear enough fruit in accordance with your maturity level.
I know you have argued in another post that Eternal Life doesn't really mean eternal in the sense it plainly seems to mean to me.
But if 1 Cor 15:1-2 is so plain as to negate the eternal nature of the life found within eternal life, then why does Paul say their belief served
NO purpose?
1 Corinthians 15:2 (LEB)
by which you are also being saved, if you hold fast to the message I proclaimed to you, unless you believed to no purpose.
On your view, Paul should have said believed to a temporary purpose or fleeting purpose or conditional purpose or revocable purpose or "everything salvation is now" purpose (which is surely not
no purpose). But he doesn't say that, he says
no purpose or "
vain". This is fact #1 that excludes your interpretation of this passage as being valid.
http://biblehub.com/greek/1500.htm
Definition: without a cause, purpose; purposelessly, in vain,
for nothing
1 Corinthians 15:1-2 NASB, for example, plainly says that you are saved if you keep--that is hold fast--the word of God. That makes that a condition for saved people to be saved,...
Actually Paul says they must hold fast-
-the word I preached to you... and then lists the items of "
first importance" he previously preached to them.
What's a condition then, according to this context, for receiving salvation, (whether you think it's temporary (anti-OSAS) or eternal (OSAS), either way) includes the
first importance items of 1) believing in Jesus' resurrection and 2) His one sacrifice for your sins.
Therfore, A person in Corinth that holds to a firm belief in a salvific need to continue sacrificing animals (anti-2) or anti-resurrection beliefs (anti-1) or a need to meet a fruit quota (anti-2), that person had a
vain belief in Paul's gospel message to begin with. Which is why the past tense verb is used; "
believed in vain". This is fact #2 about this passage which precludes your interpretation of it. It should say;
by which also you are saved, if you hold fast the word which I preached to you, unless you develope a vain belief later in life
to be in accord with your interpretation of it.
The plain, spelled out words in 1 Corinthians 15:1-2 NASB are the more compelling evidence that overrules the vague, not spelled out words of Romans 11:29 NASB.
Romans 11:29 (NASB) For the gifts and the calling of God are irrevocable.
What is vague within this verse?
What the gifts are?
What the calling of God is?
Or what irrevocable means?
I don't see any ambiguity in this verse.
Or in 1 Cor 15:1-2. Although the clarity within 1 Cor 15:1-2 differs from your interpretation of Paul's statement there.