'Eight' in the Bible

Jehoram was thirty-two years old when he became king, and he reigned in Jerusalem eight years; and he departed with no one’s regret (sorrow). They buried him in the City of David, but not in the tombs of the kings.

Now they began the consecration on the first [day] of the first month, and on the eighth day of the month they came to the porch of the Lord. Then for eight days they consecrated the house of the Lord, and on the sixteenth day of the first month they finished.

Josiah was eight years old when he became king, and he reigned for thirty-one years in Jerusalem.

Jehoiachin was eight[teen] years old when he became king, and he reigned for three months and ten days in Jerusalem, and he did evil in the sight of the Lord.