I agree with you, jeremiah1five.
Was Abraham a Hebrew? I'm not sure. I would say he was Caldean. But if we considered him Hebrew, we would then have to consider the Arabs Hebrews as well.... futhermore, we should regard as Hebrews the descendants of Cetura through the Middle East are as well.
No, Abraham was Hebrew, a descendant of Eber who was descendant of Noah.
13 And there came one that had escaped, and told Abram the Hebrew; Gen. 14:13.
I think the Spirit who Authored the Scripture wants it to be known Abraham was Hebrew, a descendant of Eber, whose name means "crossed over" referring to his father who it appears to me was obedient to God who commanded the people to 'scatter' and "fill the earth." A group of them remained together in disobedience to God's command given to Noah and his kids.
Abraham had Ishmael who was of mixed birth but although could be considered part Hebrew whom I think not having the Promises as an inheritance may have rebelled and maintained the Egyptian half of his heritage instead of the Hebrew. He had twelve sons just as Jacob later did. And although Esau was also Hebrew by birth being a grandson of Abraham, the inheritance passed over him, too. But he was blessed of God just the same. Not having inherited the covenant but did receive it seems the blessings for God made him prosperous and he gave the God of His father, Isaac, the credit for his blessings.
But the covenant was a family covenant being passed to Isaac (the son), and then to Jacob (grandson), and then to Jacob's children and their descendants. God sealed this by making a covenant with over three million Hebrews in the desert at the time of Moses and the Tabernacle, a covenant known as the Mosaic Covenant. So, yes, it is through the Abrahamic seed even to this day. But God scattered this people twice before the cross, (Assyria and Babylon), and twice more after the cross (Roman and German 1930s), sending them into Gentile lands to live, and yes, have offspring of mixed heritage. So, to me when Gentiles are being born again in the pages of the New Covenant writings of Matthew to Revelation, I think these are half-Jew and half-Gentile offspring of various DNA dilutions. Still, if they have at least one parent who was Hebrew in their ancestry they are still Abraham's seed and "heirs according to the Promise" (Gal. 3:29.) Samaritans teach me this. The woman at the well is the example. One of them, that is.
Now, my friend, you know that God also made a covenant with Noah... and Noah was far from being a Hebrew.
Noah's covenant was not a salvation covenant in the same vein as Abraham's, Mosaic, or New.
Noah's covenant did pass on to his three kids, and like Jacob and not Esau, it was to Shem and not Ham or Japheth. There has always been a people on the planet separated to God, seed of the woman opposed to seed of the serpent.
8 And God spake unto Noah, and to his sons with him, saying,
9 And I, behold,
I establish my covenant with you, and
with your seed after you;
10
And with every living creature that is with you, of the fowl, of the cattle, and of every beast of the earth with you; from all that go out of the ark, to every beast of the earth.
...and the covenant promise is:
11 And I will establish my covenant with you;
neither shall all flesh be cut off any more by the waters of a flood; neither shall there any more be a flood to destroy the earth.
12 And God said, This is the token of the covenant which I make between me and you and every living creature that is with you,
for perpetual generations:
13 I do set my bow in the cloud, and it shall be for a token of a covenant between me and the earth.
Gen. 9:8–13.
There were no Gentiles at this time, only Adamites. Gentiles were not "cultivated" (Defined:
discriminated) until God made covenant with Abram the Hebrew and gave circumcision as the sign of His Covenant promises. Then, by default, Gentiles came into being. And "nations" did not always define Gentiles. It was used to describe the "nations and kings" that would "come out of thee" (Abraham) in the Genesis narrative. Later, it came to identify anyone not Hebrew.
6 And I will make thee exceeding fruitful, and I will make
nations of thee, and
kings shall
come out of thee.
Gen. 17:5–6.
15 And God said unto Abraham, As for Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall her name be. 16 And I will bless her, and give thee a son also of her: yea, I will bless her, and she shall be a
mother of nations;
kings of people shall be of her.
Gen. 17:15–16.
It is unreasonable to think that non-Hebrew Gentile would come from the offspring of two Hebrew parents. Sarah was Abraham's niece. It was an all in the family covenant passed on to the children and the children's children, etc.
What I am trying to say is that the covenants of God and Israel are very important and special... but God has revealed Himself in many ways to many people. Salvation is not confined to any people on the basis of genetics.
Many ways and to many people and those people are Hebrew and seed of Abraham. God has no covenant with non-Hebrew Gentiles. None.
And yes, it is genetics. As long as a child has at least one Hebrew parent in their ancestry and their name is in the book of life of the lamb slain, that person is heir according to the promise God gave to Abraham. The covenant is with his seed.