How did the scholar Origen experience the power of invoking the name of Jesus Christ?

The scholar Origen often spoke of the power of the name of Jesus, and his confidence in achieving conquest and victory over sin and the devil, and over all the powers of darkness. He says, “Through His name, many demons are cast out of people; especially if it is prayed in a spiritual and sound manner with all confidence. Great is the name of Jesus, and effective and blessed. The name of Jesus heals those who are suffering mentally, dispels the spirits of darkness, and grants healing to the sick.”