Matthew 12:34-35
"Broods of vipers! how can ye speak good things, being yourselves evil? For, out of the abundance of the heart, the mouth speaks.
Luke 6:45
"The good man out of the good treasure of his heart brings forth that which is good; and the evil, out of the evil treasure brings forth that which is evil; for out of the abundance of the heart does his mouth speak.
Matthew 15:19
For out of the heart come forth evil thoughts, murders, adulteries, fornications, thefts, false-witnessings, blasphemies:
Mark 7:21-23
For from within, out of the heart of men, proceed evil thoughts, fornications, thefts, murders, adulteries,
Mark 14:38
Watch, and pray, that ye enter not into temptation. The spirit, indeed, is willing, but the flesh is weak."
Hebrews 12:15
looking carefully, lest there be any one falling short of the grace of God; lest any root of bitterness, springing up, trouble you, and through it many be defiled;
James 1:14-15
But each one is tempted, when by his own desire he is drawn away and enticed.