'Seed' in the Bible

So shall their blood return upon the head of Joab, and upon the head of his seed for ever: but unto David, and unto his seed, and unto his house, and unto his throne, shall there be peace for ever from Jehovah.

And Jehovah raised up an adversary unto Solomon, Hadad the Edomite: he was of the king's seed in Edom.

And I will for this afflict the seed of David, but not for ever.

And with the stones he built an altar in the name of Jehovah; and he made a trench about the altar, as great as would contain two measures of seed.