What does Isaiah 28:18 mean?

“Because you have said, ‘We have made a covenant with death, and with Sheol are we in agreement. When the overflowing scourge passes through, it won’t come to us; for we have made lies our refuge, and we have hidden ourselves under falsehood.’”

Therefore thus says the Lord Yahweh, “Behold, I lay in Zion for a foundation a stone, a tried stone, a precious cornerstone of a sure foundation. He who believes shall not act hastily.

I will make justice the measuring line, and righteousness the plumb line. The hail will sweep away the refuge of lies, and the waters will overflow the hiding place.

As often as it passes through, it will seize you; for morning by morning it will pass through, by day and by night; and it will be nothing but terror to understand the message.”

For the bed is too short to stretch out on, and the blanket is too narrow to wrap oneself in.

For Yahweh will rise up as on Mount Perazim. He will be angry as in the valley of Gibeon; that he may do his work, his unusual work, and bring to pass his act, his extraordinary act.