Sin breeds sin until it dominates a person and he cannot escape from it. Sin weakens a person’s willpower. It gradually strengthens his will to commit sin and weakens his will to repent until there is no will in his heart to repent at all… so he seeks forgiveness and expresses repentance, but it is merely words on the lips, like the repentance of the liars, whose hearts are still determined to commit sin and persist in it. This is one of the most serious diseases that is likely to lead to doom. He becomes desensitized and no longer find sins abhorrent, so it becomes his habit, and he is not bothered if people see him committing the sin or talk about him. [...]