'Barefoot' in the Bible

at that time spake Jehovah by the hand of Isaiah son of Amoz, saying, 'Go, and thou hast loosed the sackcloth from off thy loins, and thy sandal thou dost draw from off thy foot,' and he doth so, going naked and barefoot.

And Jehovah saith, 'As My servant Isaiah hath gone naked and barefoot three years, a sign and a wonder for Egypt and for Cush,

so doth the king of Asshur lead the captivity of Egypt, and the removal of Cush, young and old, naked and barefoot, with seat uncovered -- the nakedness of Egypt;