'Commander' in the Bible

And he said, "Neither. I have come now [as] the commander of Yahweh's army." And Joshua fell on his face to the earth, and {he bowed down} and said to him, "What [is] my lord commanding his servant?"

The commander of Yahweh's army said to Joshua, "Take off your sandals from your feet, for the place where you [are] standing [is] holy." And Joshua did so.