Jesus acknowledged that the Jews were the descendants of Abraham, but that they weren’t the “children of Abraham” or the “children of God” anymore, but the “children of the devil”. Since Abraham is not their father, but the devil is, the promises that God gave to Abraham of those blessing Abrahams children being blessed does not apply to the Jews. They rejected Christ and are the children of the devil and not Abraham.
In John 8:37 Jesus said “I know you are Abraham’s descendants”.
in vs. 38, “If you were Abraham’s children,” said Jesus, “then you would[c] do what Abraham did.”
In vs 42, “If God were your Father, you would love me, for I have come here from God.
In vs 44, “You belong to your father, the devil, and you want to carry out your father’s desires.“
You are literally arguing with Jesus here. There is no “children of Abraham” by descent anymore
Jesus says in John 8, “I know that you are Abraham’s descendants…If you were Abraham’s children, then you would[c] do what Abraham did. As it is, you are looking for a way to kill me, a man who has told you the truth that I heard from God. Abraham did not do such things… If God were your Father, you would love me, for I have come here from God… You belong to your father, the devil, and you want to carry out your father’s desires. He was a murderer from the beginning, not holding to the truth, for there is no truth in him.
Jesus literally told the Jews they aren’t Abraham’s children or Gods but the devils. There are no two senses, you either believe in Jesus and are a “child of Abraham”, or aren’t one.