Obadiah, containing only one chapter, is the shortest book in the Old Testament. In it is given a prophetic interpretation of a great calamity that has already occurred in Edom and a prediction of a universal judgment.

Obadiah 1

1:12 But thou shouldest not have looked on the day of thy brother in the day that he became a stranger; neither shouldest thou have rejoiced over the children of Judah in the day of their destruction; neither shouldest thou have spoken proudly in the day of distress.