'Sandal' in the Bible

that I will not take a thread nor a sandal strap nor anything that is yours, lest you should say, 'I have made Abram rich.'

Moab is my wash pot. I will toss my sandal on Edom. I will shout over Philistia."

He is the one who comes after me, who is preferred before me, whose sandal strap I'm not worthy to loosen."