Illumination of Conscience and 3 Days of Darkness in 5 Points

Have you ever heard about the coming “Illumination of Conscience” and the “Three Days of Darkness.” Where does it come from in the Bible, Traiditon and Mystics. Dr. Taylor Marshall interviews Xavier Reyes-Ayral, author of “Revelations” about these two concept and their relationship to one another, namely:
What is the Illumination of Concience?
Where does it come from? Who talks about it?
How does it relate to the Three Days of Darkness?
Where is 3 Days of Darkness in Bible and Tradition?
How do we prepare for the Illumination Warning and 3 Days of Darkness?