Matthew 12:34-35
O degenerate race, how can ye, wicked as ye are, utter any thing that is good? for "'tis the overflowing of the heart that the mouth dischargeth."
Luke 6:45
a good man out of the good treasure of his heart produces what is good: and an evil man out of the evil treasure of his heart produces what is evil: for 'tis from the abundance of the heart, that the mouth speaketh.
Matthew 15:19
out of the heart proceed evil designs, murders, adulteries, fornications, thefts, false testimony, slanders.
Mark 7:21-23
for from within, from the heart of man proceed wicked designs, adulteries, fornications, murders; thefts,
Mark 14:38
watch and pray, that you may not yield to temptation: the mind indeed is vigorous, but the body is weak.
Hebrews 12:15
take care not to deprive yourselves of the divine favour: and that no poisonous root spring up, and spread a general infection among you.
James 1:14-15
a man is instigated, and drawn into the snare by his own vicious passions, which once indulg'd, are productive of sin,