Here’s a helpful quote from Calvin on humanity’s fallen state:
“For all who are not utterly blind, perceive that no part of us is sound; that the mind is smitten with blindness, and infected with innumerable errors; that all the affections of the heart are full of stubbornness and wickedness; that vile lusts, or other diseases equally fatal, reign there; and that all the senses burst forth with many vices.” -Calvin (Genesis Commentary)
