…with His stripes we are healed. – Isaiah 53:5

(S)in is like a disease because it puts all the faculties out of gear and breaks the equilibrium of the life- forces, just as disease disturbs all our bodily functions. When a man is sick and ill, nothing about him works as it ought to do. There are some particular symptoms which, first of all, betray the existence of the virus of disease, but you cannot injure any one power of the body without the rest being, in their measure, put out of order! Thus, has sin come into the soul of man and put him altogether out of gear. Sometimes a certain passion becomes predominant in a person quite out of proportion to the rest of his manhood. Things that might have been right in themselves, grow by indulgence into positive evils, while other things which ought to have had an open existence are suppressed until the suppression becomes a crime. It is sin that makes us wrong and makes everything about us wrong—and makes us suffer, we know not how much!

The worst of the matter is that we do not, ourselves, readily perceive that we are the evil-doers and we begin, perhaps, to judge others who are right. And because they are not precisely in the same condition as ourselves, we make our sinful selves to be the standard of equity and consider that they are wrong, when all the while the evil is in ourselves! As long as a man is under the power of sin, his soul is under the power of a disease which has disturbed all his faculties and taken away the correct action from every part of his being. Hence, God sees sin to be a disease, and we ought to thank Him that, in His gracious condescension, He deals with it in that way, instead of calling it what it really is—a crime deserving instant punishment. ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/2499.cfm