Matthew 12:34-35
Ye brood of vipers, how can ye, being evil, speak good things? For out of the abundance of the heart the mouth speaketh.
Luke 6:45
A good man, out of the good treasure of his heart, bringeth forth that which is good; and an evil man, out of the evil treasure of his heart, bringeth forth that which is evil; for of the abundance of the heart the mouth speaketh.
Matthew 15:19
For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, railings.
Mark 7:21-23
For from within, out of the heart of man proceed evil thoughts, adulteries, fornications, murders,
Mark 14:38
Couldest thou not watch one hour? Watch and pray, lest ye enter into temptation; the spirit indeed is willing, but the flesh is weak.
Hebrews 12:15
Looking diligently, lest any one fall from the grace of God, lest any root of bitterness springing up trouble you, and thereby many be defiled: Lest there be any fornicator or profane person,
James 1:14-15
But every man is tempted, when he is drawn away by his own desire and inticed.