The issue is whether God is all powerful. If he is, then why allow the evil he allows? Either he cannot stop that evil, or he believes it's good for people to have terrible things happen to them.
It's easy to say that God moves in mysterious ways and we cannot understand what he's doing, but what he's doing is causing a lot of pain to a lot of people. Or, again, he cannot stop that pain.
When Adam and Eve rebelled against God, they challenged his sovereignty, that is, his right to rule. The Creator could have destroyed them and started over with another couple, but that would not have settled the issue of whose rulership is right and best for people. Granted time to develop their societies according to their own ideas, humans would demonstrate beyond any doubt whether rulership independent from God could ever be successful.
What do thousands of years of human history tell us? For all those centuries, people have tried many kinds of social, economic, political, and religious systems. However, wickedness and suffering have continued. In fact,‘wicked men have advanced from bad to worse,’ especially in our time.—2 Timothy 3:13.
The 20th century saw a peak of scientific and industrial achievements. But it also saw the worst suffering in the entire history of the human race. And no matter what medical advances are made, the law of God still holds true: Humans separated from God—the source of life—get sick, grow old, and die. How clearly it has been proved that humans cannot ‘direct their own steps’!
Once and for all time, this tragic experiment in independence from God has demonstrated that rulership by humans apart from him can never succeed. Only God’s rulership can bring happiness, unity, health, and life. Moreover, Jehovah God’s infallible Word, the Holy Bible, shows that we are living in “the last days” of human rule independent from God.(2 Timothy 3:1-5) Jehovah’s toleration of this and of wickedness and suffering is nearing its end.
God will soon intervene in human affairs. The Scriptures tell us:“In the days of those kings [human rulerships now existing] the God of heaven will set up a kingdom [in heaven] that will never be brought to ruin. And the kingdom itself will not be passed on to any other people [never again will humans rule the earth]. It will crush and put an end to all these kingdoms [present rulerships], and it itself will stand to times indefinite.”—Daniel 2:44.
The vindication of Jehovah God’s sovereignty by means of the heavenly Kingdom is the Bible’s theme. Jesus made this his foremost teaching. He said:“This good news of the kingdom will be preached in all the inhabited earth for a witness to all the nations; and then the end will come.”—Matthew 24:14.
When God’s rulership replaces man’s rule, who will survive and who will not? At Proverbs 2:21, 22, we are assured:“The upright [who uphold God’s rule] are the ones that will reside in the earth, and the blameless are the ones that will be left over in it. As regards the wicked [who do not uphold God’s rule], they will be cut off from the very earth.” The divinely inspired psalmist sang:“Just a little while longer, and the wicked one will be no more . . . But the meek ones themselves will possess the earth, and they will indeed find their exquisite delight in the abundance of peace. The righteous themselves will possess the earth, and they will reside forever upon it.”—Psalm 37:10, 11, 29.