Daniel 10:21 defines Michael as the restrainer referred to in 2 Thessalonians 10. Daniel 12:1 shows what happens next. When Michael ends his restraint of Satan (Dan 12:1), he casts Satan out of heaven where he has been the accuser of the brethren (Rev 12:7-9), Satan gives his authority to the antichrist who makes war with the saints (Dan 12:7; Rev 12:17; !3:7). This is the time of distress (LXX: thlipsis) (Dan 12:1), the great tribulation (Greek: thlipsis) predicted by Jesus in Matthew 24:21 and Mark 13:19. This will last the three and one-half years prior to the second coming of Christ (Rev 13:5).