The Bishops that had stepped out of the Holy Church died before they could even utilize their holy essence to protect themselves.
Even though they were strengthened in their domain, their strength still paled in comparison to Eren who was like a walking catastrophe now.
Normally, Eren would have been more cautious. He would have used the Ancient Dragon Language more carefully, trying to not reveal his identity.
Fortunately for him, today was different. The strongest members of the Holy Church had entered the Dungeon to look for an unknown dragon, not realizing that the dragon was wreaking havoc in their home.
Since the Holy Priestess and Cardinals were absent, there was no one who could recognise the Dragon Language just from the flow of essence around Eren's body.