My apologies for adding another reply,
but I felt that the below needed to be addressed.
" (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; )" ( Romans 9:11 ).
Here we see the clear statement that being not yet born, neither having done
any good or evil, that the purpose of God
according to election shall stand.
It is not of works, but "of" Him that calls.
This tells us that what is previously being described in Romans 9:6-10 descends from God alone, and is in no way the product of man's efforts.
What is described, is here:
" Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel:
7 neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called.
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." ( Romans 9:6-8 ).
There it is, right there...
Who is a child of God, and who is not.
It is concluded here:
" 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." ( Romans 9:22-26 ).
I'm not sure how, when a believer in Jesus Christ reads this carefully, that so many who profess Him actually miss it.

To me, it doesn't need any "interpretation" ( neither does the rest of the Bible )...
It simply needs
believing.
That said,
This chapter, all by itself, refutes the idea that we as men have any choice in the matter of salvation...
When it is God's purposes according to
election that will stand.
Those He has "called" are His children.
Those vessels of mercy, afore ( before ) prepared unto His glory, are
all that will be saved.
Romans 9 is the
core of God's word when it comes to who His mercy and grace are bestowed upon.
May God bless you all as you prayerfully consider these words.