In Psalm 60:8 and Psalm 108:9 we read, “…, upon Edom I toss my sandal; …” David said that.
Shoes in Palestine and in the days of the Bible.
Houses in Palestine have a threshold called the mastaby. There all the people who enter the house remove their shoes and enter barefooted.
Shoes are always spoken of with great disrespect. Shoes are considered unclean like dogs. The work of a slave was to unloose the shoe. What did John the Baptist say? He said that he was not worthy to unloose the shoes of the Lord Jesus Christ. In Exodus 3:5 it says, “‘Do not come any closer,’ God said. ‘Take off your sandals, for the place where you are standing is holy ground.'” Read also Joshua 5:15.
What does it mean, “… upon Edom I toss my sandal?” (Psalm 60:8) The meaning of “To cast the shoe upon” anyone is to degrade and humble him to the very limit.
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Read also Amos 2:6; 8:6