Effects of Sins include: Deprivation of knowledge. Deprivation of provision. A sense of alienation from one’s Lord and from other people. Increased difficulties in life. Darkness within the heart. Deprivation of worship and obedience. One sin leads to another, until sin dominates the person, leaving them unable to escape. Weakening of willpower. Desensitization, causing one to no longer find sin abhorrent. Leaving a stain or mark on the heart.