Proverbs 4:23
Keep thine heart with all diligence, for thereupon hangeth life.
Proverbs 4:7
The chief point of wisdom is that thou be willing to obtain wisdom, and before all thy goods to get the understanding.
Matthew 12:34-35
O generation of vipers, how can ye say well, when ye yourselves are evil? For of the abundance of the heart, the mouth speaketh.
Luke 6:45
A good man out of the good treasure of his heart bringeth forth that which is good. And an evil man out of the evil treasure of his heart, bringeth forth that which is evil. For of the abundance of the heart, his mouth speaketh.
Jeremiah 17:9
Among all things living, man hath the most deceitful and unsearchable heart. Who shall then know it?
Matthew 15:19
For out of the heart come evil thoughts, murder, breaking of wedlock, whoredom, theft, false witness-bearing, blasphemy.
Deuteronomy 4:9
Take heed to thyself therefore only and keep thy soul diligently, that thou forget not the things which thine eyes have seen, and that they depart not out of thine heart, all the days of thine life: but teach them thy sons, and thy son's sons.
Psalm 139:23-24
Try me, O God, and seek the ground of mine heart; prove me, and examine my thoughts.
Proverbs 3:21
My son, let not these things depart from thine eyes, but keep my law and my counsel:
Proverbs 11:16
A gracious woman maintaineth honesty; as for the mighty, they maintain riches.
Proverbs 13:3
He that keepeth his mouth, keepeth his life; but whoso speaketh unadvised, findeth harm.
Proverbs 22:5
Spears and snares are in the way of the froward; but he that will keep his soul, let him flee from such.
Proverbs 23:19
My son, give ear and be wise, so shall thine heart prosper in the way.
Proverbs 28:26
He that trusteth in his own heart, is a fool; but he that dealeth wisely, shall be safe.
Ecclesiastes 5:13
Yet is there a sore plague, which I have seen under the sun: namely, riches kept to the hurt of him that hath them in possession.
Mark 7:21-23
For from within even out of the heart of men, proceed evil thoughts: adultery, fornication, murder,
Mark 14:38
Watch ye, and pray, lest ye enter into temptation: the spirit is ready, but the flesh is weak."
Hebrews 12:15
And look to, that no man be destitute of the grace of God, and that no root of bitterness spring up and trouble; and thereby many be defiled:
James 1:14-15
But every man is tempted, drawn away, and enticed of his own concupiscence.