The book presents itself as the word of the Lord to Joel, son of Pethuel. He immediately asks the elders and all who live in the land to pay attention: nothing like this has happened in their days or their fathers' days, and they must tell their children. The locusts come in waves, and what one kind leaves, the next devours, until nothing is left.
Joel calls the wine drinkers to wake up and weep, because the sweet wine has been cut off. A mighty and countless nation, with lions' teeth, has invaded the land, laid the vine waste and stripped the fig tree bare. Then the prophet asks for mourning like a young woman grieving the husband of her youth. The grain offering and the drink offering are gone from the house of the Lord, the priests mourn, the field is ruined, the grain, new wine and oil have failed, and joy has withered among the people.
Then the call turns to the priests: put on mourning clothes, spend the night in sackcloth, declare a holy fast and gather the elders and all the inhabitants at the house of the Lord to cry out to him. Joel recognizes that the day of the Lord is near and will come as destruction from the Almighty. Even the animals groan for lack of pasture and water. The chapter ends with the prophet's own prayer: he himself cries to the Lord, because fire has devoured the pastures and the streams have dried up.