It's possible for evil spirits to come into a person. We cannot deny the fact that there are evil spirits on this earth.
But the Lord is our protector. He always guides us and keeps us away from the spirits and their attacks. We are dwelling on the care and protection of God. Although there are evil powers everywhere roaming around looking for who to destroy and attack.
But the Bible says that although we can walk through the valley of their but let us fear no evil. There will be nothing to fear when we are willing to walk in this path. Many people are suffering from different spiritual attacks because they have refused to accept the Lord as a personal savior. And they are no longer under the protection of God.
That is why we have seen so many problems in the world. People are passing through terrible kinds of situations where they could not know the solution and they do not know the root cause of the problem. They are just struggling day in day out.
All this result shows that this is the handwork of the evil forces around the world. Evil spirits are everywhere. There is a strong force that is covering the world and if we are not under the protection of God then we might be prone to these attacks.
When we look at all parts of life, the entertainment industry, the political circle you see all kinds of demons dominating. Why are men using evil power to control the world? Their business satanic forces to do all kinds of evil but when we are born again we would accept the need to live a holy life.