Proverbs 4:7Wisdom is the principal thing; therefore get wisdom: and with all thy getting get understanding.
Matthew 12:34-35O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh. A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things.
Luke 6:45A 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 17:9The heart is deceitful above all things, and desperately wicked: who can know it?
Matthew 15:19For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:
Deuteronomy 4:9Only take heed to thyself, and keep thy soul diligently, lest thou forget the things which thine eyes have seen, and lest they depart from thy heart all the days of thy life: but teach them thy sons, and thy sons' sons;
Proverbs 3:21My son, let not them depart from thine eyes: keep sound wisdom and discretion:
Proverbs 11:16A gracious woman retaineth honour: and strong men retain riches.
Proverbs 13:3He that keepeth his mouth keepeth his life: but he that openeth wide his lips shall have destruction.
Proverbs 22:5Thorns and snares are in the way of the froward: he that doth keep his soul shall be far from them.
Proverbs 23:19Hear thou, my son, and be wise, and guide thine heart in the way.
Proverbs 28:26He that trusteth in his own heart is a fool: but whoso walketh wisely, he shall be delivered.
Ecclesiastes 5:13There is a sore evil which I have seen under the sun, namely, riches kept for the owners thereof to their hurt.
Mark 7:21-23For from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders, Thefts, covetousness, wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness: All these evil things come from within, and defile the man.
Mark 14:38Watch ye and pray, lest ye enter into temptation. The spirit truly is ready, but the flesh is weak.
Hebrews 12:15Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled;
James 1:14-15But every man is tempted, when he is drawn away of his own lust, and enticed. Then when lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death.