We are made in Our Creator's Image. Our modern mind eats freely from the tree of good and evil. Knowing evil, we eventually become too curious about it and go into the abyss to
experience it. If we partake of that world, we instantly become the strong man's
goods.
In this modern age, rushing back to the morals and ideals of Babel, the strong man has more goods and power than ever.
Q: Who can spoil the strong man's good's without first binding the strong man?
A: He who can defeat the strong man, though unbound.
This is the good news. The tremendous Glory that will shine on God when the devil is fully unbound and allowed to assail God's Children.
St. Augustine reveals what happens next:
"But when the short time comes he shall be loosed. For he shall rage with the whole force of himself and his angels for three years and six months; and those with whom he makes war shall have power to withstand all his violence and stratagems. And if he were never loosed, his malicious power would be less patent, and less proof would be given of the steadfast fortitude of the holy city: it would, in short, be less manifest what good use the Almighty makes of his great evil. For the Almighty does not absolutely seclude the saints from his temptation, but shelters only their inner man, where faith resides, that by outward temptation they may grow in grace. And He binds him that he may not, in the free and eager exercise of his malice, hinder or destroy the faith of those countless weak persons, already believing or yet to believe, from whom the Church must be increased and completed; and he will in the end loose him, that the city of God may see how mighty an adversary it has conquered, to the great glory of its Redeemer, Helper, Deliverer. And what are we in comparison with those believers and saints who shall then exist, seeing that they shall be tested by the loosing of an enemy with whom we make war at the greatest peril even when he is bound? Although it is also certain that even in this intervening period there have been and are some soldiers of Christ so wise and strong, that if they were to be alive in this mortal condition at the time of his loosing, they would both most wisely guard against, and most patiently endure, all his snares and assaults."
- St. Augustine, 'The City of God' Book XX, Chapter 8