'Own' in the Bible

So he sent letters to all the king’s provinces, to each province according to its script and to every people according to their language, that every man should be the master in his own house and the one who speaks in the language of his own people.

He was bringing up Hadassah, that is Esther, his uncle’s daughter, for she had no father or mother. Now the young lady was beautiful of form and face, and when her father and her mother died, Mordecai took her as his own daughter.

But when it came to the king’s attention, he commanded by letter that his wicked scheme which he had devised against the Jews, should return on his own head and that he and his sons should be hanged on the gallows.