No one among them is weary or stumbles,
No one slumbers or sleeps;
Nor is the belt at their waist undone [as if unprepared for action],
Nor is the strap of their sandal broken.

And the Lord will utterly destroy
The tongue of the Sea of Egypt;
And with His scorching wind
He will wave His hand over the River;
He will strike and divide it into seven channels
And make [it possible for] people [to] walk over in sandals.

at that time the Lord spoke through Isaiah the son of Amoz, saying, “Go, untie the sackcloth from your hips and take your sandals off your feet.” And he did so, walking around stripped [to his loincloth] and barefoot.