'Ancestors' in the Bible

I replied to the king, "O king, live forever! Why would I not appear dejected when the city with the graves of my ancestors lies desolate and its gates destroyed by fire?"

and said to the king, "If the king is so inclined and if your servant has found favor in your sight, dispatch me to Judah, to the city with the graves of my ancestors, so that I can rebuild it."

Those truly of Israelite descent separated from all the foreigners, standing and confessing their sins and the iniquities of their ancestors.

"You saw the affliction of our ancestors in Egypt, and you heard their cry at the Red Sea.

"But they -- our ancestors -- behaved presumptuously; they rebelled and did not obey your commandments.

You multiplied their descendants like the stars of the sky. You brought them to the land you had told their ancestors to enter in order to possess.

"So now, our God -- the great, powerful, and awesome God, who keeps covenant fidelity -- do not regard as inconsequential all the hardship that has befallen us -- our kings, our leaders, our priests, our prophets, our ancestors, and all your people -- from the days of the kings of Assyria until this very day!

Our kings, our leaders, our priests, and our ancestors have not kept your law. They have not paid attention to your commandments or your testimonies by which you have solemnly admonished them.

"So today we are slaves! In the very land you gave to our ancestors to eat its fruit and to enjoy its good things -- we are slaves!

Isn't this the way your ancestors acted, causing our God to bring on them and on this city all this misfortune? And now you are causing even more wrath on Israel, profaning the Sabbath like this!"