Well I have certainly realized, via this thread, how scripture becomes a mangled mess in their hands. Plenty are willfully blind and work to ensnare others.
The promise in Romans 9 has nothing to do with being unconditionally elected unto salvation but everything to do with faith.
To be a child of promise, a child of Abraham, one must believe first. Which is why Paul concludes this point in Romans 9:30-33.
Romans 9:30-33
30 What then shall we say? That the Gentiles, who did not pursue righteousness, have obtained it, a righteousness that is by faith; 31 but the people of Israel, who pursued the law as the way of righteousness, have not attained their goal. 32 Why not? Because they pursued it not by faith but as if it were by works. They stumbled over the stumbling stone.
Wrong. Did you actually read and understand Romans 9 and associated verses from other books? True enduring belief comes from God, not man. Therefore, one must first become saved to receive the attributes of a true Christian, one of which, is true belief.
It can't be made any clearer than the following verses make it.
[Phl 1:29 KJV] 29 For unto you it is given in the behalf of Christ, not only to believe on him, but also to suffer for his sake;
[2Pe 1:1 KJV] 1 Simon Peter, a servant and an apostle of Jesus Christ, to them that have obtained like precious faith with us through the righteousness of God and our Saviour Jesus Christ:
[Jhn 6:29 KJV] 29 Jesus answered and said unto them, This is the work of God, that ye believe on him whom he hath sent.
[Act 13:48 KJV] 48 And when the Gentiles heard this, they were glad, and glorified the word of the Lord: and as many as were ordained to eternal life believed.
[Jhn 17:9 KJV]
9 I pray for them: I pray not for the world, but for them which thou hast given me; for they are thine. ...
[Rom 9:8,11, 15-16, 18, 20-26 KJV]
8 That is, They which are the children of the flesh, these [are] not the children of God: but the children of the promise are counted for the seed.
11 (For [the children] being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of him that calleth ...
15 For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion.
16 So then [it is] not of him that willeth, nor of him that runneth, but of God that sheweth mercy. ...
18 Therefore hath he mercy on whom he will [have mercy], and whom he will he hardeneth. ...
20 Nay but, O man, who art thou that repliest against God? Shall the thing formed say to him that formed [it], Why hast thou made me thus?
21 Hath not the potter power over the clay, of the same lump to make one vessel unto honour, and another unto dishonour?
22 [What] if God, willing to shew [his] wrath, and to make his power known, endured with much longsuffering the vessels of wrath fitted to destruction:
23 And that he might make known the riches of his glory on the vessels of mercy, which he had afore prepared unto glory,
24 Even us, whom he hath called, not of the Jews only, but also of the Gentiles?
25 As he saith also in Osee, I will call them my people, which were not my people; and her beloved, which was not beloved.
26 And it shall come to pass, [that] in the place where it was said unto them, Ye [are] not my people; there shall they be called the children of the living God.