Moritz F. Adam explores conceptions of time in the book of Ecclesiastes and its place in the history of thought in Hellenistic Judaism. He situates Ecclesiastes before a wider panorama of emerging apocalyptic thought and investigates how the text reflects, resists, and reworks prevailing ideas about time, history, knowledge, and meaning. Adam shows how Ecclesiastes stands at an important moment of conceptual transformation to the manner in which time was thought about in ancient Judaism, and how the book reflects new, broader, totalising, and abstract concerns in conversation with contemporary interlocutors. Through textual studies, comparative discussions and theoretical engagements with the fields of Classics and Literature, Adam challenges scholarly boundaries between wisdom, apocalypticism, and other genres, and highlights Ecclesiastes' pluralistic, open-ended discourse as a vital part of ancient Jewish thought.