'Heir' in the Bible

And Abram said, Lo, to me thou hast given no seed, and behold, a son of my house will be mine heir.

And behold, the word of Jehovah came to him, saying, This shall not be thine heir, but he that will come forth out of thy body shall be thine heir.

And behold, the whole family is risen against thy bondmaid, and they say, Deliver him that smote his brother, that we may put him to death, for the life of his brother whom he killed; and we will destroy the heir also: so they will quench my coal which is left, and will not leave to my husband a name or remnant on the earth.

under an odious woman when she is married, and a handmaid when she is heir to her mistress.

Concerning the children of Ammon. Thus saith Jehovah: Hath Israel no sons? hath he no heir? Why is Malcam heir of Gad, and his people dwell in the cities thereof?

I will yet bring unto thee an heir, O inhabitress of Mareshah; the glory of Israel shall come even unto Adullam.