to empty out: to drain something completely, whether a country stripped of everything in it or a plan drained of all its force.
The picture behind this verb is a container tipped up and drained. Hebrew calls a clay flask a "baqbuq", a name that imitates the gurgle of liquid running out, and the verb belongs with that sound. So when Isaiah says the LORD is emptying the earth, the image is not a wall smashed or a city burned but a vessel poured out until nothing is left inside it.
The prophets aim the word in two directions:
- Outward at a whole country, which is emptied of its people and its goods, as when plunderers strip Israel bare or invaders drain the fields of Babylon.
- Inward at what a people carries within itself, so that Egypt's nerve runs out of it and Judah's carefully laid plans are poured away to nothing.
The sound of the word is part of its force. In Isaiah 24:1 it stands beside a near twin for ruining a land (בָּלַק), and two verses later beside the ordinary word for plundering (בָּזַז), so the threat lands as a pair of matched drumbeats rather than a flat statement. Nahum sets the verb next to its own participle, so the line reads "emptiers have emptied them". And in Jeremiah 19 the prophet is told to buy a clay flask before God announces that he will pour out the plans of Judah, which makes the sentence of judgment sound like the object in the prophet's hand.