Mark 7:21-22
For from within, out of the heart of men, proceed evil thoughts, fornications, thefts, murders, adulteries,
Matthew 10:33
But whosoever denies Me before men, him will I also deny before My Father Who is in Heaven.
Matthew 12:34-36
"Broods of vipers! how can ye speak good things, being yourselves evil? For, out of the abundance of the heart, the mouth speaks.
Acts 5:3-4
But Peter said, "Ananias, why did Satan fill your heart, that you should lie to the Holy Spirit, and keep back part of the price of the land?
Romans 3:10-18
as it has been 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 for every good work worthless.
Hebrews 3:12
Take heed, brethren, lest at any time there shall be in anyone of you an evil heart of unbelief, in falling away from the living God;
James 1:15
Then the desire, having conceived, brings forth sin; and sin, when completed, brings forth death.
James 3:6
And the tongue is a fire, the world of iniquity! the tongue is placed among our members, as that which defiles the whole body, and sets on fire the course of life, and is set on fire by Hell.