Not only angels, jinns, and human beings, but even animals, birds, insects, trees, and plants all have a spiritual development in their lives. No creature ever born on earth will be deprived entirely of spiritual bliss, however bad or wrong it may seem. It is a matter of time and progress. Human beings all have a moment, a day, when they touch spiritual bliss; thus all other beings have a moment of promise, and that promise is the fulfillment of their life's purpose. There is nothing in this world without a purpose, and though our places in the scheme of life may seem different from one another, yet in the sum total of things we and the lower creation, together with the angels and the jinns, all have our purpose. That purpose is the realization of truth, and this realization comes to us in the form of bliss.