Then the Commander of the LORD's army said to Joshua, "Take your sandal off your foot, for the place where you stand is holy." And Joshua did so.
Joshua 5:15
Surrounding context
5:14 So He said, "No, but as Commander of the army of the LORD I have now come." And Joshua fell on his face to the earth and worshiped, and said to Him, "What does my Lord say to His servant?"
5:15 Then the Commander of the LORD's army said to Joshua, "Take your sandal off your foot, for the place where you stand is holy." And Joshua did so.