'Seed' in the Bible

He took also of the seed of the land, and planted it in a fruitful soil; he placed it beside many waters; he set it as a willow tree.

and he took of the seed royal, and made a covenant with him; he also brought him under an oath, and took away the mighty of the land;

and tell them, Thus says the Lord Yahweh: In the day when I chose Israel, and swore to the seed of the house of Jacob, and made myself known to them in the land of Egypt, when I swore to them, saying, I am Yahweh your God;

You shall give to the priests the Levites who are of the seed of Zadok, who are near to me, to minister to me, says the Lord Yahweh, a young bull for a sin offering.

Neither shall they take for their wives a widow, nor her who is put away; but they shall take virgins of the seed of the house of Israel, or a widow who is the widow of a priest.