Mark 7:21
For it is from within, out of a person's heart, that evil thoughts come — sexual immorality, theft, murder — the catalog of internal defilements begins with the heart as the source: evil thoughts (dialogismoi kakoi). The specific sins that follow fall into three clusters: sexual sins (sexual immorality, adultery), property sins (theft, greed, deceit), and social violence (murder, wickedness, envy, slander, arrogance, folly). All of them originate in the heart — the internal moral condition — rather than in external contact with defiling things.