This is what the locusts represent. The locusts are a plague of spiritual falsities which destroy the growth of heaven within our minds. Now most people, when they hear the word falsity in connection with religion, tend to think in terms of false statements . If you reflect on it, you realize that truth, for example, is not merely a series of facts learnt from the Word. Truth is a special way of looking at life which is provided by the teachings of Divine Revelation.
Truth is spiritual light.
Falsity, on the other hand, is darkness. Another thing we must realize about falsity is that it is not simply a matter of perspective. It is also connected to what we love. Falsity is the result of loving what is evil. Of course, some basically good people have mistaken ideas.