1. Historical background of the book: It happened from the end of the 6th century BC to the beginning of the 5th century BC, and Israel was conquered by the Babylonian Empire and exiled. It was a period full of pain and suffering. By describing the social phenomenon and political structure at that time, the book conveyed the encouragement and hope to the people, as well as the expectation and appeal for the national rejuvenation of Israel.

2. The essence of the book: it can be analyzed from multiple angles. This book appeals to Israelis to stick to their beliefs and be loyal to God even in difficult times. The book reminds Israel to cherish the existing gifts and draw strength and courage from them. Finally, the book encourages Israelis to unite in the predicament and jointly seek the road to revival.