[myrrh]
Myrrh is the fragrant substance that oozes out of the stems and branches of the low, shrubby tree commiphora myrrha or comiphora kataf native to the Arabian deserts and parts of Africa. The fragrant gum drops to the ground and hardens into an oily yellowish-brown resin. Myrrh was highly valued as a perfume, and as an ingredient in medicinal and ceremonial ointments.
[Nicolaitans]
Nicolaitans were most likely Gnostics who taught the detestable lie that the material and physical realms were entirely separate and that immorality in the physical realm wouldn't harm your spiritual health.
[omega]
Omega is the last letter of the Greek alphabet. It is sometimes used to mean the last or the end.
[Peniel]
Peniel is Hebrew for "face of God."
[phylactery]
a leather container for holding a small scroll containing important Scripture passages that is worn on the arm or forehead in prayer. These phylacteries (tefillin in Hebrew) are still used by orthodox Jewish men. See Deuteronomy 6:8.