2 Samuel 18:6-8

New Revised Standard Version, Anglicised

⁶ So the army went out into the field against Israel; and the battle was fought in the forest of Ephraim. ⁷ The men of Israel were defeated there by the servants of David, and the slaughter there was great on that day, twenty thousand men. ⁸ The battle spread over the face of all the country; and the forest claimed more victims that day than the sword.