'Ruler' in the Bible

So the controller of the king's house, with the ruler of the town, and the responsible men, and those who had the care of Ahab's sons, sent to Jehu, saying, We are your servants and will do all your orders; we will not make any man king; do whatever seems best to you.

Go back and say to Hezekiah, the ruler of my people, The Lord, the God of David your father, says, Your prayer has come to my ears, and I have seen your weeping; see, I will make you well: on the third day you will go up to the house of the Lord.

And he made all the priests from the towns of Judah come into Jerusalem, and he made unclean the high places where the priests had been burning offerings, from Geba to Beer-sheba; and he had the high places of the evil spirits pulled down which were by the doorway of Joshua, the ruler of the town, on the left side of the way into the town.

As for the people who were still living in the land of Judah, whom Nebuchadnezzar, king of Babylon, did not take away, he made Gedaliah, the son of Ahikam, the son of Shaphan, ruler over them.

Now the captains of the armed forces, hearing that the king of Babylon had made Gedaliah ruler, came with their men to Gedaliah at Mizpah; Ishmael, the son of Nethaniah, and Johanan, the son of Kareah, and Seraiah, the son of Tanhumeth the Netophathite, and Jaazaniah, the son of the Maacathite, came with all their men.