Old covenant v new covenant
“Not as though the word of God hath taken none effect.
For they are not all Israel, which are of Israel: neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called. 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 KJV
“and think not to say within yourselves, We have Abraham to our father: for I say unto you, that God is able of these stones to raise up children unto Abraham.”
Matthew 3:9
flesh and blood doesn’t make someone special to god or make them Abraham’s children. Paul’s showing us there are two ways to identify Israel , by thier flesh and blood meaning they are a blood decsendant of Abraham but that has changed
neither, because they are the seed of Abraham, are they all children: 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.”
What Paul’s saying is Abraham’s children are born like this
“Know ye therefore that they which are of faith, the same are the children of Abraham. 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.
For as many of you as have been baptized into Christ have put on Christ. ( Abraham’s seed )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. And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise.”
Galatians 3:7, 16, 27-29 KJV
“but the children of the promise are counted for the seed.”
The children of Israel are jacobs children a nation of people god has chosen all along and entered into a covenant with to be his priests and servants and fellows to govern over the new earth to come.
the children of Abraham father of many nations according to the promise of Christ his seed come from every nation and are identified by thier belief in Jesus Christ and the gospel of his kingdom
israel is one of many nations is my point believing doesn’t make a gentile an Israelite ot makes them a child of Abraham the father of many nations because of this and not flesh and blood
“Neither shall thy name any more be called Abram, but thy name shall be Abraham; for a father of many nations have I made thee.”
Genesis 17:5
“And he said unto them, Go ye into all the world, and preach the gospel to every creature. He that believeth and is baptized shall be saved; but he that believeth not shall be damned.”
Mark 16:15-16 KJV
“And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth. Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world. Amen.”
Matthew 28:18-20 KJV
In the ot the children of Abraham were only isralites ishmael was cast out and wasn’t an hier now anyone who believe the gospel Jew or gentile is Abraham’s seed and hiers according to the promises made to him by the lord