Sacred mysteries, also known as arcana, refer to religious or spiritual truths, practices, or rituals that are considered too profound, esoteric, or sacred to be widely disclosed or understood by the general public. These mysteries are often central to various religious and mystical traditions, including Hermeticism, Gnosticism, and certain branches of Christianity, Judaism, and Islam. In Hebrew, the term can be translated as סודות קדושים (sodot kdoshim), while in Greek, it is often referred to as ἄρρητα (arrheta). Sacred mysteries are typically revealed only to initiates or those who have undergone specific rituals or teachings, emphasizing their hidden or secretive nature. They often involve symbolic interpretations, divine revelations, or esoteric knowledge that is believed to lead to spiritual enlightenment or union with the divine. The concept of sacred mysteries has played a significant role in the development of various mystical and theological traditions throughout history.