“You shall be holy” and “You shall love your neighbour as yourself” are the two great spiritual beacons of the Parsha. How do they relate to the many detailed laws that surround them? We will read the book of Leviticus as a text haunted by the catastrophe of the Golden Calf. In this book of order and holiness, we will trace the post-traumatic presence of the idol that disrupted the Revelation at Sinai. Rather than being simply a regrettable episode of the past, the Golden Calf becomes an essential element in the story. This is the crisis whose effects are to remain diffused through the generations. Veiled in the text of Leviticus and revealed in the midrash, the troubling continuity of the Calf acts a reminder of the dynamic role played by failure and loss in a richer human history.