'Posterity' in the Bible

Therefore, lo, I am bringing in evil unto the house of Jeroboam, and have cut off to Jeroboam those sitting on the wall -- shut up and left -- in Israel, and have put away the posterity of the house of Jeroboam, as one putteth away the dung till its consumption;

Behold, I will take away the posterity of Baasha, and the posterity of his house; and will make thy house like the house of Jeroboam the son of Nebat.

Behold, I will bring evil upon thee, and will take away thy posterity, and will cut off from Ahab him that pisseth against the wall, and him that is shut up and left in Israel,