'Heir' in the Bible

Abram said, “O Lord God, what will You give me, since I am childless, and the heir of my house is Eliezer of Damascus?”

And Abram said, “Since You have given no offspring to me, one born in my house is my heir.”

Then behold, the word of the Lord came to him, saying, “This man will not be your heir; but one who will come forth from your own body, he shall be your heir.”

Therefore she said to Abraham, “Drive out this maid and her son, for the son of this maid shall not be an heir with my son Isaac.”