Put off thy shoes; either out of reverence to the Divine presence, as Joshua 5:15, or that thereby he might show that he resigned himself wholly to God's will and disposal; as in Ruth 4:7, the kinsman, by pulling off his shoe and giving it to Boaz, did resign all his right he might have had to Ruth and the inheritance. Holy ground, whilst God manifested his presence there.
Related Commentaries of Acts 7:33
Acts 7:33
33 Then said the Lord to him, Put off thy shoes from thy feet: for the place where thou standest is holy ground.