Why God, if exist, could not eliminiate evil with his/her invincible powers , when humanity is suffering because of evil possessed people.?

If God did that you could not be Atheist and be dishonest, promiscuous, and gay.

the way you ask the question shows, just how little you really know.

You have totally missed the whole purpose of this physical realm. It is a war between God and Satan and you are created to be His warrior, however, many find it too difficult to be correct and do whatever they want.

The Bible explains that in the near future, found at Psalms 37:9-10 "For the evildoers themselves will be cut off...And just a little while longer, and the wicked one will be no more; and you will certainly give attention to his place, and he will not be there." So this is a Prophecy which is to take place shortly. So what about the good people then u might ask? What's going to happen to them? Matthew 5:5 says "Happy are the mild tempered or kindly ones, since THEY will inherit the earth." How many people today practice being mild tempered and kind? Not as many as in days gone by. But this shows us exactly what to do to survive the elimination of those who act wickedly. Hope this helps. See JW.org for more answers to your spiritual questions 😊

Then God will have to destroy humanity. I can tell by your question that your heart does not belong to God. I do not judge, but rather be grateful that you still have the chance to fix things with God.

God made provision for us through Jesus' suffering and resurrection, but we also have to keep up our end of the bargain.

We create our reality. If I need an authority then I follow. If I don't, I create... suffering, love and evil is optional with or without God.

If God acted instantly to eliminate evil, whenever it arose, that would just cause far more evil to abound. Why? Because nobody would know if the person God eliminated was right to challenge (or to disobey) God. That was the issue raised in the Garden of Eden when sin (evil) appeared. It appeared in the form of a question about God's authority and God's claims. Doubt was raised as to God being entirely true and honest - the suggestion was made that God was keeping from humans something good, that they could have if they disobeyed God. That is what evil is.

However, if God struck down the challenger right away, Adam and Eve would have wondered if that did not prove the challenger to be correct! So God decided to allow time for the challenger to prove his challenge, and for humanity to learn for themselves whether God was true or false.

You do know, don't you, that you have caused other people suffering? We all have. That's because we all have evil in our hearts. We are all corrupted by the sin (rebellion) that started in Eden. Why, if we had been there, we would have rebelled ourselves! We are all capable of doing great evil and causing immense suffering to innocent people. All we need is the opportunity and the incentive. That has been proven by scientific experiments. We suffer because we are evil, and we are in a downward spiral of evil that sucks in every more people. Yet God does not strike us dead! He allows us time to see His grace in providing deliverance from sin, death and the devil, by sending Jesus from Heaven to pay the penalty for our sins - yet He was sinless! God does not even desire the wicked to die - they have the same opportunity to repent and to be delivered from evil (as Jesus showed us how to pray for in Matthew 6:13).

Simple fact: Not even God can create a real logical contradiction. God choose to give us humans the capacity to love and that means He also gives us the capacity to do evil. The capacity to do love; the capacity to do evil are two sides of the same coin.

you have forgotten about the laws of god which are of karmic origin where we all come to earth and mess up and then have to come back yet again to fix things and thus takes many such lives on eath ...religions say yes and some say no to these divine laws.

Possessed my a.s.s.

S/He doesn't exist.