Matthew 12:34-36
Offspring of vipers, how can you, being evil, speak good things? For out of the abundance of the heart the mouth speaks.
Matthew 15:19
For from the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false testimonies, blasphemies:
Matthew 23:13
But woe to you scribes and Pharisees, hypocrites! For you shut up the kingdom of heaven before men; for you enter not into it, neither do you suffer those entering to go in.
Acts 5:3-4
But Peter said, Ananias, why has Satan filled your heart that you should lie to the Holy Spirit, and that you should keep back a part of the price of the land?
Acts 8:21-22
You have no part nor inheritance in this work; for your heart is not right before God.
James 1:14-15
But every one is tempted when he is drawn away by his desires, and enticed;
James 1:27
Pure religion and undefiled with the God and Father is this, to visit the orphans and widows in their affliction, and to keep one's self unspotted from the world.
James 3:5-6
so also the tongue is a small member and boasts of great things. Behold, how much wood a little fire kindles!