'Reign' in the Bible

Ish-bosheth began to reign over Israel at the age of 40 years, and he reigned for two years, even though Judah's lineage followed David.

So Abner told David, "Give me permission to go out and rally all of Israel to your majesty the king so they can enter into a formal agreement with you to reign over everything that your heart desires." So David sent Abner off, and he went away in peace.

David began to reign when he was 30 years old, and he reigned 40 years.

The LORD has repaid you personally for murdering the entire dynasty of Saul, whose place you've taken to reign! And the LORD has given the kingdom into your son Absalom's control. Now look! Your own evil has caught up with you, because you're guilty of murder!"

One time there was a famine during David's reign that went on for three straight years. David sought the LORD, who said, "Saul and his household are guilty because he executed the Gibeonites."