'Seed of Abraham' in the Bible

Didst not thou, O our God, drive out the inhabitants of this land before thy people Israel, and give it to the seed of Abraham thy friend for ever?

O ye seed of Abraham his servant, Ye children of Jacob, his chosen ones.

But thou, Israel, my servant, Jacob whom I have chosen, the seed of Abraham my friend,

then will I also cast away 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 cause their captivity to return, and will have mercy on them.

I say then, Did God cast off his people? God forbid. For I also am an Israelite, of the seed of Abraham, of the tribe of Benjamin.

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

For verily not to angels doth he give help, but he giveth help to the seed of Abraham.