'Sandals' in the Bible

But the Lord said to him, ‘Take off the sandals from your feet, for the place on which you are standing is holy ground.

And the angel said to him, “Gird yourself and put on your sandals.” And he did so. And he *said to him, “Wrap your cloak around you and follow me.”

And while John was completing his course, he kept saying, ‘What do you suppose that I am? I am not He. But behold, one is coming after me the sandals of whose feet I am not worthy to untie.’