Proverbs 4:23

Deuteronomy 4:9 NIV
Only be careful, and watch yourselves closely so that you do not forget the things your eyes have seen or let them fade from your heart as long as you live. Teach them to your children and to their children after them.

Ecclesiastes 5:13 NIV
I have seen a grievous evil under the sun: wealth hoarded to the harm of its owners,

Hebrews 12:15 NIV
See to it that no one falls short of the grace of God and that no bitter root grows up to cause trouble and defile many.

James 1:14-15 NIV
but each person is tempted when they are dragged away by their own evil desire and enticed. Then, after desire has conceived, it gives birth to sin; and sin, when it is full-grown, gives birth to death.

Jeremiah 17:9 NIV
The heart is deceitful above all things and beyond cure. Who can understand it?

Luke 6:45 NIV
A good man brings good things out of the good stored up in his heart, and an evil man brings evil things out of the evil stored up in his heart. For the mouth speaks what the heart is full of.

Mark 14:38 NIV
Watch and pray so that you will not fall into temptation. The spirit is willing, but the flesh is weak.”

Mark 7:21-23 NIV
For it is from within, out of a person’s heart, that evil thoughts come—sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. All these evils come from inside and defile a person.”

Matthew 12:34-35 NIV
You brood of vipers, how can you who are evil say anything good? For the mouth speaks what the heart is full of. A good man brings good things out of the good stored up in him, and an evil man brings evil things out of the evil stored up in him.

Matthew 15:19 NIV
For out of the heart come evil thoughts—murder, adultery, sexual immorality, theft, false testimony, slander.