Mark 7:21-22
For from within, out of the heart of man proceed evil thoughts, adulteries, fornications, murders,
Matthew 10:33
But whosoever shall deny me before men, him will I also deny before my Father who is in heaven.
Matthew 12:34-36
Ye brood of vipers, how can ye, being evil, speak good things? For out of the abundance of the heart the mouth speaketh.
Acts 5:3-4
But Peter said, Ananias, why hath Satan filled thy heart, to lie to the Holy Ghost?
Romans 3:10-18
As it is written, There is none righteous, no not one.
Titus 1:16
They profess to know God, but by their works they deny him, being abominable and disobedient, and void of judgment as to every good work.
Hebrews 3:12
Take heed, brethren, left there be in any of you an evil heart of unbelief, in departing from the living God:
James 1:15
Then desire having conceived, bringeth forth sin; and sin being perfected, bringeth forth death.
James 3:6
And the tongue is a fire, a world of iniquity: it is the tongue among the members which defileth the whole body and setteth on fire the course of nature, and is set on fire of hell.