Apocalipse 9:2

And he opened... — Translate, And he opened the pit of the abyss; and there went up smoke out of the pit, as the smoke of a great furnace; and the sun was darkened, and the air, by reason of the smoke of the pit. The first result of the opening of the pit is the diffusion of such a dense smoke that light and atmosphere are darkened. In the previous vision there was an obscuration of light arising from the smiting of the luminaries; in this the obscuration arises from causes external to the luminaries. In that the light-giving power was enfeebled; in this the light is not enfeebled, but hindered. This must be remembered. The interpretation of these visions is most difficult; but we must bear in mind that they are descriptive of that great war which the Church is waging with the world, which good is waging with evil, but the end of which, we are assured, is the victory of good. The kingdoms of this world become the kingdoms of the Lord, and of His Christ (Apocalipse 11:15); but during the progress of the war the issue will often appear doubtful: nay, even the triumph may seem to be in the hand of the enemy; but faith disregards the back-flowing waves, for she knows the tide is coming in. We have seen that the advance of Christianity is marked by the manifestation of evils as well as the establishment of good. Christianity does not create evils, but the very intense honesty of her principles reveals the hidden force of unsuspected corruption. Thus the faith of Christ is come to give light unto the world, but in her progress many lights fall — the false lights of world-power, world-wisdom, false religionism, and heresies. The enemy, too, is at work, and seeks to obscure her light by the diffusion of dark and low-born thoughts. The smoke of the pit blackens the light and confuses the atmosphere. Now, this obscuration is surely the diffusion on earth of evil thoughts and ideas, the spirit of falsehood and hate, hostility to truth, and enmity against God and man. The bright, clear air made gladsome by the sun is darkened; “all forms that once appeared beautiful become hideous.”