The undead are most abhorrent to us. Their flesh is putrid, and the mark of the Trickster is upon them.
from the Mass of Saint Aaron[1]
The Mass of St. Aaron is a religious service detailing views held by the Hammerite faith. It was taken by St. Aaron and is known to have detailed the Hammerite view on the Undead.
It is possible that the talk was later performed in memory of St. Aaron.