'Ancestor' in the Bible

A man of God came to Eli, saying to him, "This is what the LORD says: "When they were in Egypt and slaves to the house of Pharaoh, did I not reveal to the family of your ancestor Aaron

I chose your ancestor from all the tribes of Israel to be my priest, to offer sacrifice on my altar, to burn incense, and to bear the ephod before me. I gave to your ancestor's house all the fire offerings made by the Israelites.

Therefore,' {declares} Yahweh the God of Israel, 'though I solemnly said that your house and the house of your ancestor would walk before me forever, but now,' {declares} Yahweh, 'far be it from me, for those who honor me I will honor, but those who despise me, I will treat with contempt!

Look, days [are] coming when I will cut off your {strength} and the {strength} of the house of your ancestor {so that no one in your house will live to old age}.