Botanical Information - Rituals & History : The collective name Guggul can also be used to refer to myrrh, frankincense and other gum resin trees of Africa to central Asia.
Myrrh is famously one of the three gifts of the Three Magi to the Christ child. Earlier in history, Myrrh was one of the ingredients in kyphi, a mixture of scents used in religious rituals in ancient Egypt, and was also used by them as incense and in embalming preparations.

Myrrh Constituents: Volatile oil, about 8%, (containing heerabolene, limonene, dipentene, pinene, eugenol, cinamal-dehyde, cuminaldehyde, etc), resins, up to 40% (including commiphoric acids), gum (about 50%).

Myrrh References