'Seed of Abraham' in the Bible

Did you not, O Lord our God, after driving out the people of this land before your people Israel, give it to the seed of Abraham, your friend, for ever?

O you seed of Abraham, his servant, you children of Jacob, his loved ones.

But as for you, Israel, my servant, and you, Jacob, whom I have taken for myself, the seed of Abraham my friend:

Then I will give up caring for the seed of Jacob and of David my servant, so that I will not take of his seed to be rulers over the seed of Abraham, Isaac, and Jacob: for I will let their fate be changed and will have mercy on them.

And they are not all children because they are the seed of Abraham; but, In Isaac will your seed be named.

So I say, Has God put his people on one side? Let there be no such thought. For I am of Israel, of the seed of Abraham, of the tribe of Benjamin.

Are they Hebrews? so am I. Are they of Israel? so am I. Are they the seed of Abraham? so am I.

For, truly, he does not take on the life of angels, but that of the seed of Abraham.