Matthew 12:34-36
How can ye, evil as ye are, speak good things? For out of the abundance of the heart the mouth speaketh.
Matthew 15:19
For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false testimony, blasphemies.
Matthew 23:13
But woe to you, scribes and Pharisees, hypocrites I because ye shut up the kingdom of heaven against men; for ye go not in yourselves, nor suffer those who are entering to go in.
Acts 5:3-4
But Peter said, Ananias, why did Satan fill thy heart that thou shouldst lie to the Holy Spirit, and keep back part of the price of the land?
Acts 8:21-22
Thou hast neither part nor lot in this matter; for thy heart is not right in the sight of God.
James 1:14-15
But each one is tempted when by his own lust he is led away and enticed;
James 1:27
Pure religion and undefiled before God, the Father, is this, to visit the fatherless and widows in their affliction, and to keep ones self unspotted from the world.
James 3:5-6
So also the tongue is a little member, and boasteth great things. Behold, how great a forest a little fire kindleth!