'Eight' in the Bible

Then God gave Abraham the covenant of circumcision, and so he became the father of Isaac and circumcised him when he was eight days old, and Isaac became the father of Jacob, and Jacob of the twelve patriarchs.

He found there a man named Aeneas who had been confined to a mattress for eight years because he was paralyzed.

After Festus had stayed not more than eight or ten days among them, he went down to Caesarea, and the next day he sat on the judgment seat and ordered Paul to be brought.