Obadiah

The shortest book, predicting Edom's downfall as justice for their actions against Judah.

Chapter 1

KJV - Obadiah 1:15

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.

The day when God acts is close for everyone who isn't Jewish. Whatever you did to others will be done to you. You'll get back what you gave.

King James Version

Simple English

* work in progress, there will be mistakes