So does God refuse to remove the Evil from the world because he cannot or does not want to?

Allah tells us He is Pure, Loving, and absolutely Just in every respect. He says He is the Best of Judges. He also tells us the life we are in here is a test. He has created everything existing and He created whatever happens as well. There is nothing in this existence except what He has created. He also says in the Quran He created evil (although He is not evil). He is using this as one of the many tests for us.

Consider people who do so much evil in the earth and then live to a ripe old age in the splendor and wealth of their ill-gotten gains and die without ever being taken to task for their deeds. Where is the justice or fairness in this? Allah provides a clear answer for us in Quran as to what is in store for these most evil of people:

A brief enjoyment in this world! - and then unto Us will be their return, then We shall make them taste the severest torment because they used to disbelieve [in Allah, belie His Messengers, deny and challenge His proofs, signs, verses, etc.]

[Noble Quran 10:70]

That Day mankind will proceed in scattered groups that they may be shown their deeds.

So whoever does good equal to the weight of an atom, shall see it.

And whoever does evil equal to the weight of an atom, shall see it.

[Noble Quran 99:6-8]

Do people think that they will be left alone because they say: "We believe," and will not be tested.

And We indeed tested those who were before them. And Allah will certainly make (it) known (the truth of) those who are true, and will certainly make (it) known (the falsehood of) those who are liars, (although Allah knows all that before putting them to test).

Or those who do evil deeds think that they can outstrip Us (i.e. escape Our Punishment)? Evil is that which they judge!

Whoever hopes for the Meeting with Allah, then Allah's Term is surely coming. And He is the All-Hearer, the All-Knower.

And whosoever strives, he strives only for himself. Verily, Allah is free of all wants from the 'Alamin (mankind, jinns, and all that exists).

Those who believe [in the Oneness of Allah (Monotheism) and in Messenger Muhammad peace be upon him , and do not apostate because of the harm they receive from the polytheists], and do righteous good deeds, surely, We shall remit from them their evil deeds and shall reward them according to the best of that which they used to do.

And We have enjoined on man to be good and dutiful to his parents, but if they strive to make you join with Me (in worship) anything (as a partner) of which you have no knowledge, then obey them not. Unto Me is your return, and I shall tell you what you used to do.

And for those who believe (in the Oneness of Allah and other items of Faith) and do righteous good deeds, surely, We shall make them enter in (the entrance of) the righteous (i.e. in Paradise).

Of mankind are some who say: "We believe in Allah," but if they are made to suffer for the sake of Allah, they consider the trial of mankind as Allah's punishment, and if victory comes from your Lord, (the hypocrites) will say: "Verily! We were with you (helping you)." Is not Allah Best Aware of what is in the breast of the 'Alamin (mankind and jinns)?

Verily, Allah knows those who believe, and verily, He knows the hypocrites [i.e. Allah will test the people with good and hard days to discriminate the good from the wicked (although Allah knows all that before putting them to test)].

[Noble Quran 29:2-11]

Reward and punishment are definitely a part of the Next Life on a very permanent basis. Those who suffer in this life and seemly have nothing to show for all their hard works, good deeds and sacrifices and maintaining the faith can look forward to a far greater reward in a place where these things will not be temporary but rather they will be for eternity. Those who corrupt, violate, injure and do evil and destruction seem to escape any justice here, yet in the Next Life they too will see the fruits of their labors, and certainly they will be paid according to what they have done as well.

As regards oppression, this is something Allah forbids for Himself to do to anyone and He hates it when anyone oppresses someone else. He does have absolute power over everything. He allows sickness, disease, death and even oppression so we can all be tested in what we do.

God has a timetable. Jesus gave us the signs of the end of this system, which are being fulfilled now. So, things are going to get alot worse, but then this wickedness and evil will be a thing of the past. We have a marvelous hope for the future. Be patient, its coming. 2 Peter 3:8-15. Matthew chapter 24.

The Bible is clear in that he will remove the evil. He would like All of his children to have knowledge of him and to come to him. Imagine a father with 7 children. Six of those children love their father and are close to him. One is distant and does not understand or know him. This, of course, saddens the father. While the father loves all 7 of his children greatly, he longs for the distant one to come home and get to know him better. The same is for God, our Father in Heaven. Evil remains because if it were not known, we would not recognize it.

God cannot watch each and every human being at the same time. That's why He had created the spirits to watch, guide and determine the destiny of the human beings from their daily activities, talks and thoughts too. Your past determines your present and your present determines your future. God has given freewill to all creatures including human beings. According to this, all human beings have all right to live a life as they wish. But if it happens to be bad and hurts someone, they have to face the consequences. It's a natural system. After death no one lives in any form. Heaven and hell are only for spirits. A human being is not a single spirit. All knowledge, skills, feelings, emotions, interests and everything are different spirits or different invisible elements. Even thoughts are not your own. A human being is just a robot made of different materials (flesh, bones, tissues etc.,) and a toy of the spirits for their games.

He will remove evil someday

It all started when Iniquity found in Lucifer

Iniquity can be likened to a shadow cause by the sun

We cannot say that sun is the author of shadow because you cannot found any darkness in the sun

Since light travel at straight path, anything that there is no light is a shadow and this is what was the status of Lucifer when isaiah and ezikiel said "until iniquity found in him (lucifer)"

God is not an author of sin or evil things just as the sun is not the author of shadow but merely the absent of light

If God removed all the evil from the world, why do you assume you would still be here?

Romans 3:10-12 as it is written: "None is righteous, no, not one; (11) no one understands; no one seeks for God. (12) All have turned aside; together they have become worthless; no one does good, not even one."

Evil has nothing to do with God that is of the devil. The devils aim is to make us sin and lose our souls, he hates us because we are Gods children.

Evil and Good balance out the universe.Neither can completely remove the other.

'Evil' is just an opinion, it has no independent existence

Who's judgment would he go by on what is evil and what is good?

God is not there to decide what is right and wrong, what our fate is, and what should exist, He creates potential, the rest is up to us

Neither.

He will do it once the evil runs its course and everybody has a chance to see the power evil has. Of course, not everybody will be convinced. But that's a different matter.

Do you affect the world? Or does the world affect you?

How do you affect the world? How does the world affect you?

Why do you affect the world? Why does the affect you?

If the world is the letter of law, or reigning rulers, then do not be lazy.