'Reign' in the Bible

In the third year of the reign of King Jehoiakim of Judah, King Nebuchadnezzar of Babylon came to Jerusalem and laid siege to it.

During the second year of Nebuchadnezzar's reign, Nebuchadnezzar had dreams that troubled him. As a result, he couldn't sleep.

There's a man in your kingdom in whom dwells the spirit of the holy gods. During your grandfather's reign, he was found to have insight, intelligence, and wisdom, like that of the gods. Your grandfather, King Nebuchadnezzar your kingly predecessor appointed him to be chief administrator over the magicians, enchanters, Chaldeans, and astrologers,

In the first year of the reign of King Belshazzar of Babylon, Daniel dreamed a dream, receiving visions in his mind while in bed, after which he recorded the dream, relating this summary of events.

"During the third year of King Belshazzar's reign, I, Daniel, saw a vision after the earlier vision that had appeared to me.

"In the first year of the reign of Darius son of Ahasuerus, a descendant of the Medes, who was made king over the kingdom of the Chaldeans

in the first year of his reign I, Daniel, noted in the Scripture the total years that were assigned by the message from the LORD to Jeremiah the prophet for the completion of the desolations of Jerusalem: 70 years.