Larry R. Helyer. Exploring Jewish Literature of the Second Temple Period: A Guide for New Testament Students
The fundamental dualism of Second Temple period Judaism and the NT is a horizontal or temporal dualism. God's plan for the cosmos unfolds in two ages. "This age" stretches from creation to the mighty intervention of God and his holy angels at the great Day of the Lord. This introduces a completely new era, "the age to come." The fall (or angelic rebellion, as in BW) is the reason for the necessity of a new age. Resurrection or the conferring of immortality must overcome death, one of the consequences of the introduction of sin. The age to come is a return to paradise, an age of unending flory on a renewed earth; it is, in short, a new creation."
"The NT accepts this basic dualism with ONE VERY IMPORTANT QUALIFICATIONS: THE AGE TO COME HAS ALREADY BEGUN FOR BELIEVERS IN JESUS THE MESSIAH. Already the holy Spirit has been poured out on all believers, both men and women (Acts 2:14-39); already the powers of the age to come are exerting their force in the lives of believers (Heb 1:1; 6:5) already the age of resurrection has begun with the resurrection of Jesus (1 Cor. 15:20-28). Of course, the NT maintains a reservation here. the powers of the age to come are already at work, but by no means has the age to come arrived in all its fullness. That awaits the parousia (Greek word meaning "presence, coming or arrival") of Jesus Christ at the Day of the Lord. The upshot is that is that for the NT we have a "now but not yet" tension between this age and the age to come. There is a sort of overlap between the ages. (Page 88-89)
The problem is placing the Parousia in 70AD ushering in the "age to come" as a post 70AD period. Hyper-Preterism want to think on a horizontal plane thinking in terms of time, yet it is in Christ that established a vertical plane between things below/things above, light/darkness; spirit/flesh; life/death; truth/falsehood; heavenly/earthly; God/Satan; True Israel/The Jews or world.