In Celtic belief, sacred trees hold immense mythological significance, representing the connection between the earth and the divine. Trees like the Oak and Yew are often seen as embodiments of life, wisdom, and the cycle of life and death. They function as symbols of spirituality and community, often being celebrated in rituals and folklore. The notion of trees as sacred entities reflects a deep respect for nature and its role in culture. They are often central to myths relating to creation, transformation, and the passage between worlds.