This is a testimony given by a man named Bill Wiese who had a visionary experience in which God let him experience Hell for 23 minutes. He backs up the things he witnessed with Bible verses, as he appropriately checked his experience against what the Bible says. It is powerful, it is scary, and it ought to be strong motivation for all of us to make sure that we have sincerely repented and trusted in Jesus Christ, as well as to make sure that family and friends have heard an accurate presentation of the Good News about Jesus.