Job 12:21

He poureth contempt upon princes -He has power to hurl them from their thrones, and to overwhelm them with disgrace. And weakeneth the strength of the mighty -Margin, as in Hebrew “looseth the girdle of the strong.” The Orientals wore loose flowing robes, which were secured by a girdle around the loins. When they labored, ran, or traveled, their robes were girded up. But this is common everywhere. Wrestlers, leapers, and runners, put a girdle around them, and are able thus to accomplish much more than they otherwise could. To loosen that, is to weaken them. So Job says that God had power to loosen the strength of the mighty.