Proverbs 4:23
And keep watch over your heart with all care; so you will have life.
Proverbs 4:7
The first sign of wisdom is to get wisdom; go, give all you have to get true knowledge.
Matthew 12:34-35
You offspring of snakes, how are you, being evil, able to say good things? because out of the heart's store come the words of the mouth.
Luke 6:45
The good man, out of the good store of his heart, gives good things; and the evil man, out of his evil store, gives evil: for out of the full store of the heart come the words of the mouth.
Jeremiah 17:9
The heart is a twisted thing, not to be searched out by man: who is able to have knowledge of it?
Matthew 15:19
For out of the heart come evil thoughts, the taking of life, broken faith between the married, unclean desires of the flesh, taking of property, false witness, bitter words:
Deuteronomy 4:9
Only take care, and keep watch on your soul, for fear that the things which your eyes have seen go from your memory and from your heart all the days of your life; but let the knowledge of them be given to your children and to your children's children;
Psalm 139:23-24
O God, let the secrets of my heart be uncovered, and let my wandering thoughts be tested:
Proverbs 3:21
My son, keep good sense, and do not let wise purpose go from your eyes.
Proverbs 11:16
A woman who is full of grace is honoured, but a woman hating righteousness is a seat of shame: those hating work will undergo loss, but the strong keep their wealth.
Proverbs 13:3
He who keeps a watch on his mouth keeps his life; but he whose lips are open wide will have destruction.
Proverbs 22:5
Thorns and nets are in the way of the twisted: he who keeps watch over his soul will be far from them.
Proverbs 23:19
Give ear, my son, and be wise, guiding your heart in the right way
Proverbs 28:26
He whose faith is in himself is foolish; but everyone walking wisely will be kept safe.
Ecclesiastes 5:13
There is a great evil which I have seen under the sun--wealth kept by the owner to be his downfall.
Mark 7:21-23
Because from inside, from the heart of men, come evil thoughts and unclean pleasures,
Mark 14:38
Keep watch with prayer, so that you may not be put to the test; the spirit truly is ready, but the flesh is feeble.
Hebrews 12:15
Looking with care to see that no man among you in his behaviour comes short of the grace of God; for fear that some bitter root may come up to be a trouble to you, and that some of you may be made unclean by it;
James 1:14-15
But every man is tested when he is turned out of the right way by the attraction of his desire.