The Hebrew baz means plunder or spoil taken in war. It describes the goods seized from a defeated enemy. The word appears frequently in prophetic literature both as literal military spoil and as a metaphor for complete defeat and helplessness.
Baz (plunder/spoil) carries sobering theological weight. When God's people are unfaithful, they become baz — given over to their enemies as plunder (Psalm 44:12; Isaiah 42:22). Conversely, when God fights for Israel, the enemy's goods become baz. The concept of plunder points to the cosmic battle between God's kingdom and the powers of darkness — and God's promise that His people will ultimately not be left as spoil.