Proverbs 4:23
Keep thy heart with all diligence, for out of it are the issues of life.
Proverbs 4:7
Wisdom [is] the principal thing. Get wisdom, yea, with all thy getting get understanding.
Matthew 12:34-35
Ye offspring of vipers, how can ye, being evil, speak good things? For out of the abundance of the heart the mouth speaks.
Luke 6:45
The good man out of the good treasure of his heart brings forth the good, and the bad man out of the bad treasure of his heart brings forth the bad, for out of the abundance of the heart his mouth speaks.
Jeremiah 17:9
The heart is deceitful above all things, and it is exceedingly corrupt. Who can know it?
Matthew 15:19
For from the heart comes forth evil thoughts, murders, adulteries, fornications, thefts, FALSE witnessings, revilings.
Deuteronomy 4:9
Only take heed to thyself, and keep thy soul diligently, lest thou forget the things which thine eyes saw, and lest they depart from thy heart all the days of thy life, but make them known to thy sons and thy son's sons--
Psalm 139:23-24
Search me, O God, and know my heart. Try me, and know my thoughts,
Proverbs 3:21
My son, let them not depart from thine eyes. Keep sound wisdom and discretion,
Proverbs 11:16
A gracious woman obtains honor, and aggressive men obtain riches.
Proverbs 13:3
He who guards his mouth keeps his life. He who opens wide his lips shall have destruction.
Proverbs 22:5
Thorns [and] snares are in the way of a perverse man. He who keeps his soul shall be far from them.
Proverbs 28:26
He who trusts in his own heart is a fool, but he who walks wisely, he shall be delivered.
Ecclesiastes 5:13
There is a grievous evil which I have seen under the sun: Riches [were] kept by the owner of it to his hurt.
Mark 7:21-23
For from inside the heart of men proceed evil thoughts, adulteries, fornications, murders, thefts,
Mark 14:38
Watch ye and pray that ye may not enter into temptation. Truly, the spirit is willing, but the flesh is weak.
Hebrews 12:15
Looking carefully lest any man fall short, away from the grace of God, lest any root of bitterness sprouting up would cause trouble, and by this many may be defiled,
James 1:14-15
But each man is tempted by his own lust, being drawn away and enticed.