The testimony reveals a vision where a powerful demon named Centaur, a principality from hell, attacks the minds of believers, especially pastors and ministers, by placing a spiritual steel helmet on them. This causes depression, spiritual weakness, disconnection from God, and even suicide. The demon targets the mind first, leading to loss of prayer, fasting, and holiness. God warns believers to return to their first love, put on the helmet of salvation, and renew their minds to resist this attack.