Apparently you didn't get the point of my post.
Paul was writing to the Romans. These Romans were in Christ before Paul was.
Paul said these Romans were Gentiles:
(Rom 1:6) And you also are among those Gentiles who are called to belong to Jesus Christ.
How were these Romans Gentiles, and at the same time descendants of Abraham according to the flesh.
If you understood this, you wouldn't be so confused.
Let's go over a couple of things (since between your dishonesty and your poor communication, you're making this difficult).
Firstly, this was your post:
You do know Paul used the phrase "our gospel" 3 times in the KJV?
How do you think that lines up with what Paul said in Rom 4:1?
(Rom 4:1 KJV) What shall we say then that Abraham our father, as pertaining to the flesh, hath found?
When Paul said "our gospel", was it the same "our" as when Paul said "Abraham our father"?
So your FINAL question there was based on the VERSE that you quoted. With me so far?
So Paul saids "our father AS PERTAINING TO THE FLESH". This is CLEARLY NOT pertaining to heathen Gentiles that are NOT HIS FLESH.
Secondly, you have problems understanding Paul become he jumps around and YOU don't keep up. Starting in Roman 1:18 Paul begins talking about ISRAEL and NOT about Gentiles.
Rom 1:18-19 KJV For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who hold the truth in unrighteousness; (19) Because that which may be known of God is manifest in them; for God hath shewed it unto them.
This is referring to Israel and their corrupt leadership.
Later Paul lists many of THEIR characteristics:
Rom 1:29-32 KJV Being filled with all unrighteousness, fornication, wickedness, covetousness, maliciousness; full of envy, murder, debate, deceit, malignity; whisperers, (30) Backbiters, haters of God, despiteful, proud, boasters, inventors of evil things, disobedient to parents, (31) Without understanding, covenantbreakers, without natural affection, implacable, unmerciful: (32) Who knowing the judgment of God, that they which commit such things are worthy of death, not only do the same, but have pleasure in them that do them.
No heathen Gentile was a CONVENANTBREAKER, as God had never make a covenant with THEM.
Eph 2:11-13 KJV Wherefore remember, that ye being in time past Gentiles in the flesh, who are called Uncircumcision by that which is called the Circumcision in the flesh made by hands; (12) That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world: (13) But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.
Thirdly, Peter and many others were IN CHRIST long before God revealed the BODY OF CHRIST. The BoC is NOT "spiritual Israel" as you and too many other numbskull's believe.