'Leader' in the Bible

{For some time}, when Saul was king over us, {you were leading Israel in and out}. Yahweh had said to you, 'You shall be the shepherd of my people Israel, and you will be the leader over Israel.'"

So David said to Michal, "[In the] presence of Yahweh who chose me {over} your father and {over} his household, to appoint me [as] leader over the people of Yahweh, over Israel, I have celebrated before Yahweh.

So then, thus you shall say to my servant David, 'Thus says Yahweh of hosts, "I took you from the pasture {from following} the sheep to be a leader over my people, over Israel,

Now Abishai the brother of Joab the son of Zeruiah [was] himself the leader of the thirty. He [was] wielding his spear against three hundred slain and {gained a name} among the thirty.