Isaiah obeyed immediately, although he was not told the reason for the command. We can conclude that he went about in this way constantly. Although he was not completely naked, he was dressed in a way that would attract attention everywhere he went. It was unacceptable to be without a cloak in public, except when performing labour or running (see John 13:4 and Mark 10:50). He would have had to face cold, rain, and ridicule without his cloak; yet, he did not hesitate to obey the Lord.
2 at that time the LORD spoke by Isaiah the son of Amoz, saying, “Go, and loose the sackcloth from your waist and take off your sandals from your feet,” and he did so, walking naked and barefoot.