Joshua 5:13-15 - Commander Of The Lord's Army
13 And it happened, when Joshua was by Jericho, {he looked up}, and he saw a man standing {opposite him} [with] his sword drawn in his hand. And Joshua went to him and said, "Are you with us, or with our adversaries?"
14 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?"
15 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.