Some have said that energy doesn't really diminish in the universe, it's just continually changing states. Fear is kind of like that, we have no natural defense against fear. And no matter what we try to do to get rid of it, it only changes states and morphs into other forms that become evident later as if it were taunting us that we didn't really do anything to it, but that it's alive and well etc. As God begins to take over the space, Love expands and casts out fear. All the best plans and even the execution of those plans perfectly, doesn't get rid or fear. Just kicks fear down the road like a plaque, and in a sense, fear is like a plague and the only cure is Jesus, but even though He is the cure, we aren't completely free of fear until we go to be with Him. But nonetheless fear really is swallowed up by LOVE. Real Love, God Love. And Love is always at least a step ahead, and never lagging, and never reacting. It's Always in control because Love conquers All, and there is no defense against Love, only to run from it, reject it, or to accept it, but there is no defense against it in the universe and it has never been diminished in any way shape or form. Love just IS. Period. Going up against Love is like being against The One hanging up there on the cross to save you from yourself..., you can't conquer it, but you can tell it to go away and be stuck in your own strength forever, but Love will still save, redeem, and reconcile with everyone else that receives it by accepting Jesus Offer.
The Fear of The Lord swallows up all the other fears one by one. Kind of like Moses serpent eating up all of pharaohs magicians serpents. Greater is He that is in you, than he that is in the world. Perfect Love casts out fear.