'Offspring' in the Bible

They brought the head of Ish-Bosheth to David at Hebron, and they said to the king, "Here [is] the head of Ish-Bosheth, the son of Saul your enemy, who sought your life. Yahweh has given to my lord the king vengeance this day on Saul and on his offspring."

When your days [are] full and you lie down with your ancestors, I will raise up your offspring after you who will go out from your body, and I will establish his kingdom.

Hushai continued, "You know your father and his men, that they [are] mighty warriors and they {are enraged} as a bear robbed of [her] offspring in the field. Your father [is] a man of war, so he will not spend the night with the troops.