Must There be Suffering,To Appreciate Joy?

This essay is about the source which good and bad thing come from.

Dear Friend ,
Here is a letter I receive this morning from a viewer who read my poem entitled the lord's Prayer In the Last Days.
Read her comment to me,then read my to her on the subject of spiritual contrasts are the root of good and bad thing in the world.
Their Comment:
i will applaud the effort gone into this, but TBH knee benders have always proved to me own mind how little they understand about the nature of things...without evil there can be no good, without hate there can be no love..if you have never been sad, then how can you appreciate or understand wot it is to be happy ?
Mine Comment:
First to understand the contrasts of experiencing good and bad things,we need to understand the source of their existence.
The source of good thing comes from God the creator of all things. In the Bible the first book named Genesis ,the first three chapter enplane the origins of creation. God had created every living and no-living thing in six days. After He fished each Creation He declared it good.
The source of bad or evil things come from mans disobedience to God's instruction not to eat from the tree Of the knowledge Of Good And Evil. God had created a world with out want,meaning the needs of man were all supplied for . God also warned man kind that if they ate from the tree Of the knowledge Of Good And Evil that death would come from this action.
So the source o f sickness,disease,death,injustice,terroni ,war,Famine,poverty...All have their root in the pass and present action of man kinds rebellion against God.
The big question is if God is the source of all creation, who is the source of the death,destruction,injustice? 
The answer is the Devil and his army of fallen angel. Man Kind was give the deed to the Earth by the Creator of it,who had the authority to give it. Now as long as Man kind obeyed God instructions,they were protected from the dark army of the devil and His fallen angels who wanted to invade,enslave,and destroy Man Kind and the earth. So when man kind disobey God they gave up the deed to the Earth to the Devil.
The good news is that that we live in a time of grace where man kind can be restored to fellowship with God by putting our faith in the savior Jesus . God provide the savor ,that the sins of men would be washed away by the blood of righteousness man who laid down his life to pay the dept for man's sinful nature. For as we stated before God told the man and the woman that if they disobeyed Him death would come. This death was not just physical but also spiritual. 
When The time of grace has run it course. God will scrap this old world and create a new one where only good things will exist.
Except Jesus Christ as your savor today and you will dwell In this new world and have fellowship with God face to face.
Written by Stephen J. Vattimo
Feb 14,2015