Mastema

Mastema is the chief evil spirit in the Book of Jubilees - an accuser figure who receives limited authority from God to test and tempt humanity, operating behind Pharaoh's resistance during the Exodus. In the richly layered cosmology of Second Temple Jewish writings, a formidable adversarial figure arises to mediate between divine authority and the forces of chaos that afflict humanity. This being functions as the chief of evil spirits in the Book of Jubilees, petitioning God for permission to retain a portion of these spirits after the flood so they might continue accusing and tempting mortals. Far from an independent rebel, the figure operates within a strictly ordered cosmos where even malevolent powers must seek heavenly consent, underscoring the text’s emphasis on divine sovereignty amid ongoing spiritual conflict. The Book of Jubilees situates this activity at pivotal moments in primeval and patriarchal history. In chapter 10, the spirit requests and receives one-tenth of the evil spirits to “do all manner of wrong and sin, and all manner of transgression” among humans, establishing a structured system of affliction that echoes earlier traditions of fallen watchers found in 1 Enoch. Later, during the account of Abraham, the same figure initiates the test of the patriarch by urging the sacrifice of Isaac (Jubilees 17-18), thereby serving simultaneously as accuser and instrument of divine trial. These episodes illustrate how the spirit’s role bridges the antediluvian era of Noah with the covenantal age of the patriarchs, providing a narrative mechanism for explaining both moral testing and the persistence of evil after the flood. Within the broader Enochic and Jubilean tradition, this portrayal reflects a developing angelology in which evil is neither fully autonomous nor entirely outside God’s control. The figure’s appearances tie together motifs of spiritual warfare, covenantal fidelity, and eschatological judgment that run through 1 Enoch, Jubilees, and related texts. By dramatizing the tension between accusation and protection, the narrative invites readers to consider how ancient communities understood suffering, temptation, and divine providence as intertwined elements of sacred history.