Why do we have until now war, hunger, poverty, crime, adultery, etc. if God reigns?
Actually you ask 2 questions.
That God reigns has nothing to do with the people who DON’T WANT TO LISTEN to Him and thereby CAUSE PROBLEMS to come over them.
So I delete the ‘if’ and Instead of a question mark I put an exclamation mark: GOD REIGNS!
Now the first part of your question.
There doesn’t have to be hunger, poverty and war on this earth neither does there have to be crime and war.
There is MORE THAN ENOUGH food on earth to give all ENOUGH TO EAT, and there is MORE THAN ENOUGH of all other needed things so NOBODY HAS TO BE POOR. But it is the SELFISHNESS of people who only want more and more so in the end they have an OVERLOAD while others have NOTHING.
This too is a result of humans who RATHER LISTEN TO SATAN THAN TO GOD.
This EGOISTIC SPIRIT also causes numerous problems like different CRIMES and even WARS.
GOD IS NOT TO BLAME FOR THAT, but the blame lies with people who are NOT WILLING to SURRENDER to God and DO what He says.
Because people turn themselves further and further AWAY FROM GOD these things will WORSEN till they reach a CLIMAX.
Let me in closing show you some Bible verses:
There will be NO FUTURE FOR THE EVIL MAN; The lamp of the wicked will be put out.
Now at that time Michael, the great prince who stands guard over the sons of your people, will arise. And there will be a TIME OF DISTRESS such as never occurred since there was a nation until that time; and at that time your people, EVERYONE WHO IS FOUND WRITTEN IN THE BOOKS, WILL BE RESCUED.
For then there will be a great TRIBULATION, such as has not occurred since the beginning of the world until now, nor ever will.
7. When you hear of WARS and RUMORS OF WARS, do not be frightened; those things MUST TAKE PLACE; but that is NOT YET THE END.
8. For NATION will rise up AGAINST NATION, and KINGDOM AGAINST KINGDOM; there will be EARTHQUAKES in various places; there will also be FAMINES. These things are merely THE BEGINNING OF BIRTH PANGS.