Aaron, the first high priest and brother to Moses, worships the golden calf, in an illumination from the late-13th-century manuscript La Somme le Ray. Elie Wiesel points out that this incident, which had disastrous consequences for the Israelites fleeing Egypt, cast a shadow over Aaron. In Exodus 32, Aaron instructs the Israelites, who had grown restless during Moses’ long sojourn at Mount Sinai, to gather their jewelry and fashion a golden calf. He then constructs an altar and begins to worship. When Moses returns and sees the people worshiping the calf, he is angered by their idolatrous sin and throws down the stone tablets inscribed with the Ten Commandments. Later, when the Lord punishes “the people who through Aaron made the bull-calf” (Exodus 32:35), Aaron remains unharmed—a mystery Wiesel raises but cannot solve.