Most Relevant Verses
And so, since they did not see fit to acknowledge God or approve of Him or consider Him worth the knowing, God gave them over to a base and condemned mind to do things not proper or decent but loathsome,
The heart is deceitful above all things, and it is exceedingly perverse and corrupt and severely, mortally sick! Who can know it [perceive, understand, be acquainted with his own heart and mind]?
Let no one defraud you by acting as an umpire and declaring you unworthy and disqualifying you for the prize, insisting on self-abasement and worship of angels, taking his stand on visions [he claims] he has seen, vainly puffed up by his sensuous notions and inflated by his unspiritual thoughts and fleshly conceit,
To the pure [in heart and conscience] all things are pure, but to the defiled and corrupt and unbelieving nothing is pure; their very minds and consciences are defiled and polluted.
For out of the heart come evil thoughts (reasonings and disputings and designs) such as murder, adultery, sexual vice, theft, false witnessing, slander, and irreverent speech.