This is how Christianity explains evil existing in the world.
God allows evil so the world can be used as a “testing place” for submission. Those that bow down and give up themselves in deference to Jesus are “saved” and go to heaven. All others burn in Hell for all eternity.
Evil, according to Christianity, has to exist in in the world to offer enough temptation in order to make the “test” meaningful.
It is really incredible (and ridiculous) that a test lasting a finite amount of time should decide (once and for all) what happens for an infinite amount of time.