Obadiah, Chapter 15
Quick Answer
This is Obadiah, chapter 15, a sacred text in the Christianity tradition. You can read it here verse by verse for free, listen to it read aloud, and follow cross-references that connect its themes to other traditions.
15
For the day of the LORD is near upon all the heathen: as thou hast done, it shall be done unto thee: thy reward shall return upon thine own head.