'Heir' in the Bible

You and your sons and your servants shall cultivate the land for him, and you shall bring in the produce, so that your master’s grandson may have food to eat; but Mephibosheth, your master’s grandson, shall always eat at my table.” Now Ziba had fifteen sons and twenty servants.

Now behold, the entire family has risen against your maidservant, and they say, ‘Hand over the one who killed his brother, so that we may put him to death [to pay] for the life of his brother whom he killed and destroy the heir also.’ By doing this they will extinguish my coal that is left, leaving my husband without a name or a remnant (heir) on the face of the earth.”