“The heart is deceitful above all things, and desperately wicked: who can know it?” (Jeremiah 17:9).
“An unjust man is an abomination to the just: and he that is upright in the way is abomination to the wicked” (Proverbs 29:27).
“Let not thine heart envy sinners: but be thou in the fear of the LORD all the day long” (Proverbs 23:17).
“Wisdom is the principal thing; therefore get wisdom: and with all thy getting get understanding” (Proverbs 4:7).
“When wisdom entereth into thine heart, and knowledge is pleasant unto thy soul” (Proverbs 2:10)
“A sound heart is the life of the flesh: but envy the rottenness of the bones” (Proverbs 14:30).
“Keep thy heart with all diligence; for out of it are the issues of life” (Proverbs 4:23).
“Trust in the LORD with all thine heart; and lean not unto thine own understanding. In all thy ways acknowledge him, and he shall direct thy paths” (Proverbs 3:5-6).
“Thy word is a lamp unto my feet, and a light unto my path” (Psalm 119:105).