Mark 7:21-23
21 For from within, out of the heart of man, come evil thoughts, fornication, theft, murder, adultery, 22 coveting, wickedness, deceit, licentiousness, envy, slander, pride, foolishness. 23 All these evil things come from within, and they defile a man."
21 For it is from within, out of a person’s heart, that evil thoughts come—sexual immorality, theft, murder, 22 adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. 23 All these evils come from inside and defile a person. (NIV)
As bro Bro David Brown says,
Jesus wasn't perpetrating an anatomical falsehood when he said From within, out of men's hearts, come evil thoughts, sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly.
— quoted at Beliefs re the Witness of Scripture
See Bernard Ramm's comments on the Bible's psychological terms.