Isaiah 20:2-3
2
at that time Jehovah spake by Isaiah the son of Amoz, saying, Go, and loose the sackcloth from off thy loins, and put thy shoe from off thy foot. And he did so, walking naked and barefoot.
3
And Jehovah said, Like as my servant Isaiah hath walked naked and barefoot three years for a sign and a wonder concerning Egypt and concerning Ethiopia;
Bible text: American Standard Version (1901) · Public domain