Proverbs 5:20-22  
And why wilt thou, my son, be ravished with a strange woman, and embrace the bosom of a stranger?  For the ways of man are before the eyes of the LORD, and he pondereth all his goings.  His own iniquities shall take the wicked himself, and he shall be holden with the cords of his sins.  

5:22 Num 32:23; Ps 7:15; 9:15; 40:12; Prov 1:31. You reap what you sow (Galatians 6:7).

Proverbs 8:33-36  
Hear instruction, and be wise, and refuse it not.  Blessed is the man that heareth me, watching daily at my gates, waiting at the posts of my doors.  For whoso findeth me findeth life, and shall obtain favour of the LORD.  But he that sinneth against me wrongeth his own soul: all they that hate me love death.  

Proverbs 10:12  
Hatred stirreth up strifes: but love covereth all sins.

Cross Reference: 1 Peter 4:8, Proverbs 17:9, and James 5:20. True, unselfish love comes from relationship with God (1 John 4:8).

Proverbs 10:16  
The labour of the righteous tendeth to life: the fruit of the wicked to sin.

Proverbs 10:19  
In the multitude of words there wanteth not sin: but he that refraineth his lips is wise.

Cross Reference: Prov 17:27, James 1:19, 3:2

Proverbs 11:31  
Behold, the righteous shall be recompensed in the earth: much more the wicked and the sinner.

Many believe that the Apostle Peter is pulling from this verse in 1 Peter 4:17-18.

Proverbs 13:6  
Righteousness keepeth him that is upright in the way: but wickedness overthroweth the sinner.

Proverbs 13:22  
A good man leaveth an inheritance to his children's children: and the wealth of the sinner is laid up for the just.

Proverbs 14:9  
Fools make a mock at sin: but among the righteous there is favour.

Cross Reference: Romans 6:16

Proverbs 14:21  
He that despiseth his neighbour sinneth: but he that hath mercy on the poor, happy is he.

Cross Reference: Psalms 41:1, Prov 19:17, 28:8

Proverbs 14:34  
Righteousness exalteth a nation: but sin is a reproach to any people.

Proverbs 19:2  
Also, that the soul be without knowledge, it is not good; and he that hasteth with his feet sinneth.

Ignorance can be lethal (Hosea 4:6).

Proverbs 20:2  
The fear of a king is as the roaring of a lion: whoso provoketh him to anger sinneth against his own soul.

Proverbs 20:9  
Who can say, I have made my heart clean, I am pure from my sin?

Cross Reference: 1 John 1:8 and Romans 3:10, which is a quotation from Psalms 14:1,3 and 53:1-3. Combine this proverb with Prov 28:13.

Proverbs 21:4  
An high look, and a proud heart, and the plowing of the wicked, is sin.

Proverbs 24:9  
The thought of foolishness is sin: and the scorner is an abomination to men.

Thoughts conceive actions. Moreover, God doesn't just look at our actions. God considers the thoughts and intents of the heart (1 Samuel 16:7). If you entertain and dwell on sinful thoughts then you are sinning (Mt 5:21-22 and 27-28).

Proverbs 28:13  
He that covereth his sins shall not prosper: but whoso confesseth and forsaketh them shall have mercy.

Cross Reference: 1 John 1:9, Leviticus 5:5, Psalms 32:3,5 and James 5:16. Combine 28:13 with Proverbs 20:9 and it becomes clear that no one is exempt from the application of this proverb.

Total Verses: 22
Total Passages: 17