'Ancestor' in the Bible

Ahaz [was] twenty years old when he became king, and he reigned sixteen years in Jerusalem. And he did not do what is right in the eyes of Yahweh like David his ancestor.

And he did what was right in the eyes of Yahweh, and he walked in the ways of David his ancestor and did not deviate [to] the right or [to] the left.

In the eighth year of his reign, while he [was] still a boy, he began to seek the God of David his ancestor. And in the twelfth year he began to cleanse Judah and Jerusalem of the high places, the Asherahs, the idols, and the images.