Prayers.
Written in the historical records of the empire, many miracles occurred because of the people's prayers and faith in their gods.
Their records and tales were often announced and distributed to the public to acquire more believers.
For just like how their priest told them through their words, their gods would never forsake them.
This is a crisis where the one that could save them was their gods. If this wasn't solved at the earliest time possible, corpses would pile up on the streets. Different diseases would be born. The value of money would crash, and there will be a time when the position in society, despite many people being noble, would be discarded, for humans are selfish, and life matters more than useless titles.
But there is something worse for the priest and those working in the churches. If doubts erupt in the citizen's hearts throwing their faith and belief, what will happen to them?