"It is the hour when the Word is found and the Cubic Stone is changed into the Mystic Rose.”
The soul's journey of the "cubic stone" (earthly body or unrefined soul) as it evolves into the "mystic rose" (divine love, wisdom, and unity).
The rose symbolizes spiritual unfolding, beauty amid thorns (trials), and divine mystery.
In Rosicrucianism, it's the "Rosa Mundi" (Rose of the World)—enlightenment blooming from the cross of suffering.
In the the Scottish Rite's 18th Degree ritual for the Knight Rose Croix, it's stated: "It is the hour when the Word is found and the Cubic Stone is changed into the Mystic Rose.”