James Krugel is Professor of Hebrew Literature at Harvard University. Krugel suggests that neuroscience can lend some understanding to biblical scholarship on how human beings might hear the voice of God. In a recent interview, Krugel suggests that the ancient worldview of the prophets included the idea that the mind could be penetrated by spiritual entities: The human mind could be penetrated by outside forces. Not only by God—who is sometimes depicted as going inside people, “probing their kidneys and heart” to find out what they’re really thinking—but by various sorts of “spirits.” Some of them were benign, but others were wicked spirits dispatched by Satan to take over. They were like bacteria; you couldn’t see them, but once they got inside of you they would take charge, making you think and do things against your will. So the Bible and other texts from the same period contain prayers specifically designed to ward off these evil spirits. That’s part of what I meant by sem...