en_tn/isa/28/20.md

Yahweh continues to speak to the people of Jerusalem.

For the bed is too short for a man to stretch out on, and the blanket too narrow for him to wrap himself in

Yahweh is emphasizing that trusting in lies will always cause the people to be disappointed. (See: rc://en/ta/man/translate/figs-metaphor)

Yahweh will rise up

Isaiah is now speaking.

Mount Perazim...Valley of Gibeon

These refer to times when God miraculously defeated enemy armies. (See: rc://en/ta/man/translate/translate-names)

his strange work...his strange deed

This work is strange because God is using a foreign army to defeat the people of Jerusalem. (See: rc://en/ta/man/translate/figs-doublet)