Nope.
The issue in Romans 9-11 is the status of the nation Israel before God.
The example in Isaac is that he had been the Spirit's doing.
In turn, his son Jacob (later named Israel) was of Isaac's flesh.
BUT Jacob had ALSO walked after God. Just as Abraham and Isaac had.
The issue Paul is addressing concerns the nation Israel.
One aspect of this issue being how that; just because they had been born of Abraham, Isaac, and Jacob, that alone meant nothing - they had to be of those three as those three had been in their heart that their praise before God (acceptance before God) be in accordance with His standard, not theirs, just as Isaac had been the result of God's doing, but Ishmael had been the result of Abraham's doing.
Case in point; it was AFTER Abraham turned to his own strength counter to God's promise that He would give him a seed (Isaac) and Ishmael was born; the result of Abraham's having relied on his own strength ("confidence in the flesh") that God gave Abraham the ritual of circumcision.
No. The circumcision was no ritual, and was given because of his faith,
not because Abraham had relied on his own strength.
Gen 17:9 And God said unto Abraham, Thou shalt keep my covenant therefore, thou, and thy seed after thee in their generations.
Gen 17:10 This is my covenant, which ye shall keep, between me and you and thy seed after thee; Every man child among you shall be circumcised.
Gen 17:11 And ye shall circumcise the flesh of your foreskin; and it shall be
a token of the covenant betwixt me and you.
As a reminder he was to have no confidence in his own strength, that man is dead in his flesh, incapable of producing anything in his own strength acceptable before God.
Again no, that is wrong.
God made a covenant with Abraham to bless his offspring who Abraham was told to teach the faith to.
Gen 17:14 And the uncircumcised man child whose flesh of his foreskin is not circumcised, that soul shall be cut off from his people; he hath broken my covenant.
Christs death bought this covenant to an end forever.
The issue in the Isaac example Paul brings up is that being an Israelite; of the PHYSICAL seed of Isaac in Jacob, was not all there was; only those of his PHYSICAL seed who ALSO had his heart toward God would be counted as Isaac's true seed in the sight of God.
Paul is not repeating the error that tradition has made of the above, rather, he is reiterating where UNBELIEVING Israel had screwed up as to THEIR status before God, just as the Lord had related to them in John 8.
John 8:31 Then said Jesus to those Jews which believed on him, If ye continue in my word, then are ye my disciples indeed; 8:32 And ye shall know the truth, and the truth shall make you free. 8:33 They answered him, We be Abraham's seed, and were never in bondage to any man: how sayest thou, Ye shall be made free? 8:34 Jesus answered them, Verily, verily, I say unto you, Whosoever committeth sin is the servant of sin. 8:35 And the servant abideth not in the house for ever: but the Son abideth ever. 8:36 If the Son therefore shall make you free, ye shall be free indeed. 8:37 I know that ye are Abraham's seed; but ye seek to kill me, because my word hath no place in you. 8:38 I speak that which I have seen with my Father: and ye do that which ye have seen with your father. 8:39 They answered and said unto him, Abraham is our father. Jesus saith unto them, If ye were Abraham's children, ye would do the works of Abraham. 8:40 But now ye seek to kill me, a man that hath told you the truth, which I have heard of God: this did not Abraham.
Twist these things how bias might - it remains clear that Romans 9-11 are addressing the issue "what of the nation Israel's SPIRITUAL status before God?"
No.
When Christ died the covenant God made with Abraham to bless his flesh was finished.
There are many verses showing that God had fulfilled all the promises God had made to Abrahams flesh.
Neh 9:7 Thou art the LORD the God, who didst choose Abram, and broughtest him forth out of Ur of the Chaldees, and gavest him the name of Abraham;
Neh 9:8
And foundest his heart faithful before thee, and madest a covenant with him to give the land of the Canaanites, the Hittites, the Amorites, and the Perizzites, and the Jebusites, and the Girgashites, to give it, I say, to his seed,
and hast performed thy words; for thou art righteous:
Neh 9:23
Their children also multipliedst thou as the stars of heaven, and broughtest them into the land, concerning which thou hadst promised to their fathers, that they should go in to possess it.
Neh 9:24 So the children went in and possessed the land, and thou subduedst before them the inhabitants of the land, the Canaanites, and gavest them into their hands, with their kings, and the people of the land, that they might do with them as they would.
Neh 9:25 And they took strong cities, and a fat land, and possessed houses full of all goods, wells digged, vineyards, and oliveyards, and fruit trees in abundance: so they did eat, and were filled, and became fat, and delighted themselves in thy great goodness.
Paul makes all this clear in Galations , and never did he teach that one must be only of the flesh of Abraham to be in the Israel of God.
Gal 3:26 For ye are all the children of God by faith in Christ Jesus.
Gal 3:27 For as many of you as have been baptized into Christ have put on Christ.
Gal 3:28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus.
Gal 3:29
And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise.
Gal 3:16 Now to Abraham and his seed were the promises made. He saith not,
And to seeds, as of many; but as of one, And to thy seed, which is Christ.
If you read Gen ch 17 correctly then you will see the two covenants not the one, and the second one is now dead forever.
LA