The phrase identifies the English rendition of a Latin text commonly used in musical settings, particularly during the Christmas season. It signifies a profound wonderment or secret, often rendered as “O great mystery” or “O wondrous mystery” in the English language. These translations capture the sense of awe and reverence inherent in the original Latin text. The text often evokes a sense of divine surprise at the incarnation of God.
Understanding the equivalence between the Latin and English versions allows for greater accessibility to the piece’s meaning. This, in turn, enhances appreciation for the art form. Knowledge of the text also enriches the historical context of the work, as it draws from ancient religious traditions. Disseminating the English counterpart broadens the understanding and engagement with the music, especially for non-Latin speakers.