In the year that Tartan came unto Ashdod, (when Sargon the king of Assyria
sent him,) and fought against Ashdod, and took it;
At the same time spake
the LORD by Isaiah the son of Amoz, saying, Go and loose the sackcloth from off thy loins,
and put off thy shoe from thy foot. And he did so, walking naked and
God said to Isaiah,
Take off the sackcloth from your loins,
and your shoes from your feet.
So Isaiah did that, walking naked and barefoot. 
And the LORD said, Like
as my servant Isaiah hath walked naked and
barefoot three years for a sign and wonder upon
Egypt and upon Ethiopia;
So shall the king of
Assyria lead away the Egyptians prisoners, and the Ethiopians captives,
young and old, naked and barefoot,
even with their buttocks uncovered, to the
shame of Egypt.
And they shall be afraid and ashamed of Ethiopia their expectation, and of
Egypt their glory.
And the inhabitant of this isle shall say in that day, Behold, such is our
expectation, whither we flee for help to be delivered from the king of
Assyria: and how shall we escape?