Proverbs 21:10 The soul of the wicked desireth evil: his neighbour findeth no favour in his eyes.
11 When the scorner is punished, the simple is made wise: and when the wise is instructed, he receiveth knowledge.
12 The righteous man wisely considereth the house of the wicked: but God overthrowe
These verses we see differences in kinds of people the wicked have no mercy for anyone not even their neighbor.This person seeks to do evil so strongly that he will not even spare his neighbor if he gets in their way. The next verse shows us three kinds of people . First we have the scorner who when punished still does not change his evil ways. Then we have the simple who sees what happens if he does evil and learns to do right. Then you have the wise who are eager to learn and through accumulated learning he gains knowledge .Finally we righteous man who sees and knows what the wicked has done and also knows that in the end this person will be overthrown by God and cast into hell. Again we see in the teaching of Proverbs that we should strive to gain as much knowledge of God and try to live a righteous life in His eyes so we can enjoy that heavenly home that God has promised us.