'Descendants Of Abraham' in the Bible

For certainly Christ does not [intend to] help angels, but He [intends to] help the descendants of Abraham [i.e., the Jews].

For indeed, the descendants of Levi, who are appointed to the priesthood, are commanded by the law of Moses to collect a tenth [of the income] of the Israelites, who are their brothers, even though these brothers are [also] descendants of Abraham.