'Offspring' in the Bible

I will put enmity between you and the woman, and between your offspring and her offspring. He will bruise your head, and you will bruise his heel."

"As for me, behold, I establish my covenant with you, and with your offspring after you,

for all the land which you see, I will give to you, and to your offspring forever.

I will make your offspring as the dust of the earth, so that if a man can number the dust of the earth, then your seed may also be numbered.