'Ruler' in the Bible

(Saul's son Ish-bosheth was forty years old when he became king over Israel, and he was ruler for two years.) But Judah was on the side of David.

And if I do not take away the kingdom from the family of Saul and make David ruler over Israel and Judah from Dan as far as Beer-sheba!

In the past when Saul was king over us, it was you who went at the head of Israel when they went out or came in: and the Lord said to you, You are to be the keeper of my people Israel and their ruler.

And David said to Michal, I was dancing before the Lord, who put me over your father and all his sons, to make me a ruler over the people of the Lord, over his people Israel: and I will go on playing before the Lord;

Then say these words to my servant David, The Lord of armies says, I took you from the fields, from keeping the sheep, so that you might be a ruler over my people, over my people Israel:

And Absalom, whom we made a ruler over us, is dead in the fight. So now why do you say nothing about getting the king back? And word of what all Israel was saying came to the king.