How we give Satan the weapons to move against us || APOSTLE RICHARD TAKIM

Satan has already been defeated, and that happened over 2000 years ago when Our LORD defeated Him by dying at the cross.
That historical occasion rendered Satan powerless and gave those that accept Christ as their saviour, the power to neutralize, and stand victorious over the Enemy: THE DEVIL
But why is Satan still able to fight and stand against us successfully even after His defeat on the cross?