'Descendants' in the Bible

For, as we all know, He (Christ) does not take hold of [the fallen] angels [to give them a helping hand], but He does take hold of [the fallen] descendants of Abraham [extending to them His hand of deliverance].

It is true that those descendants of Levi who are charged with the priestly office are commanded in the Law to collect tithes from the people—which means, from their kinsmen—though these have descended from Abraham.

So from one man, though he was [physically] as good as dead, were born as many descendants as the stars of heaven in number, and innumerable as the sand on the seashore.

to whom it was said, “Through Isaac your descendants shall be called.”