Do you really believe in the existence of spiritual world? How much do you know about that? Some Christians were given the gift of discerning of spirit after the encounter with the Lord Jesus Christ. It may be astonished to you that many diseases and problems were caused by the demon-possession. However, the blood of Jesus has the power to overcome all the demons and will reveal the great glory of God through the believers.
Eph. 6:12-13, “For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms. 13 Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground, and after you have done everything, to stand.”