Israel does evil, and the Lord gives them into the hand of Midian for seven years. The Midianites, together with the Amalekites and other eastern peoples, invade the land at every harvest, destroy the crops and leave Israel in great poverty, so that the people hide in caves. Israel cries out, and the Lord sends a prophet who reminds them of what God did for them and of their disobedience in worshiping the gods of the Amorites.
The angel of the Lord appears to Gideon, son of Joash the Abiezrite, while he is threshing wheat in a winepress to hide it from Midian. He calls him a mighty man of valor and says that the Lord is with him. Gideon asks why all this has happened, and the Lord commissions him to save Israel. Gideon objects that his clan is the weakest in Manasseh and that he is the least in his family. He asks for a sign, prepares an offering, and the angel makes fire spring from the rock and consume it. Gideon fears he will die, but the Lord gives him peace, and he builds an altar called The Lord Is Peace.
That night, at God's command, Gideon tears down his father's altar of Baal and the Asherah beside it, and offers a bull on a new altar. He does it at night with ten servants because he fears his family and the townspeople. When the town wants to kill him, Joash challenges them to let Baal defend himself, and Gideon is given the name Jerubbaal. Then the Midianites and Amalekites cross the Jordan and camp in the Valley of Jezreel. The Spirit of the Lord clothes Gideon, who summons Abiezer, Manasseh, Asher, Zebulun and Naphtali. Even so, he asks God to confirm his promise with a fleece of wool: first wet with dew while the ground is dry, and then dry while the ground is wet. God does so.