"God Rules the World"

PSALMS 98 [A Psalm.]
 I doubt that we take the time it consider this, by why does God allow what He allows? If you ask any pastor, they will mostly say, "I don't really know, but we just need to trust that He is in control." It's a pretty good answer for the most of us; but there are some who will never be satisfied with that kind of an answer, myself included. Having been raised with the teaching of the devil being the one who rules this world, I have made that part of the question, as in, Why does God allow the devil to do what he does? I mean, it's pretty clear by the word that God is ultimately in control, so why does the devil get to what he does, and why are God's saints treated so harshly? Besides leading us into a childlike way of thinking, there are several of these last few psalms that have been declaring the King, King Jesus, our Lord and Savior. When you read Revelation Chapter Five, there is something which takes place in heaven that involves a particular Book; a book which John sees in the right hand of Him who sits on the Throne, "written within and on the backside, sealed with seven seals." Having studied the Bible for all these years, I get the sense that there are more things we do not know than there are the things we know; I keep leaning new things almost every day, so I know there is much more about God than what could be written within a book; no matter how much we study or dig into His word, we will not find all of the answers. But what if I just wanted an answer to one question, just one? Is there such an answer to the question I seek? Anyone who might have witnessed the brutality of what Jesus went through in His final hours, what it might have looked like, and how it made those who cared for Him feel; those who saw it first hand, up close and personal, they would no longer be asking, "Why does God allow what He allows," because the question no longer matters...
"And I saw a strong angel proclaiming with a loud voice, Who is worthy to open the book, and to loose the seals thereof? And no man in heaven, nor in earth, neither under the earth, was able to open the book, neither to look thereon. I and wept much, because no man was found worthy to open and to read the book, neither to look thereon. And one of the elders saith unto me, Weep not: behold the Lion of the tribe of Judah, the Root of David, hath prevailed to open the book, and to loose the seven seals thereof. And I beheld, and, lo, in the midst of the throne and of the four beasts, and in the midst of the elders, stood a Lamb as it had been slain, having seven horns and seven eyes, which are the seven Spirits of God sent forth into all the earth. And he came and took the book out of the right hand of him that sat upon the throne. And when he had taken the book, the four beasts and four and twenty elders fell down before the Lamb, having every one of them harps, and golden vials full of odours, which are the prayers of saints." (Revelation 5:2-8) KJV