The word “destroy” in the verse above is from the Greek “katargeo?”, and it means “to bring to nought.” That means Satan has been brought to nothing; he was made powerless—he and his cohorts of hell. Colossians 2:15 (Conybeare) says, “He DISARMED the Principalities and the Powers disarmed the principalities and powers that were ranged against us and made a bold display and public example of them, in triumphing over them in Him and in it . ||
Hebrews 2:14 ASV -Since then the children are sharers in [a]flesh and blood, he also himself in like manner partook of the same; that through death he [b]might bring to nought him that [c]had the power of death, that is, the devil; ||
Ephesians 1:19-21 AMPC - And what is the immeasurable and unlimited and surpassing greatness of His power in and for us who believe, as demonstrated in the working of His mighty strength, 20 Which He exerted in Christ when He raised Him from the dead and seated Him at His right hand in the heavenly , 21 Far above all rule and authority and power and dominion and every name that is named , not only in this age and in this world, but also in the age and the world which are to come. ||