Prayer is request. The essence of request, as distinct from compulsion, is that it may or may not be granted. And if an infinitely wise Being listens to the requests of finite and foolish creatures, of course He will sometimes grant and sometimes refuse them.
If we put our trust in the common sense of common men and 'with malice toward none and charity for all' go forward on the great adventure of making political, economic and social democracy a practical reality, we shall not fail.