Perhaps he was referring, in the words of our text, to the break-up of the existing order of things which he discerned as impending and already begun to take effect in consequence of the coming of Jesus Christ, the shining of the true Light. For you may remember that in a previous part of the epistle he uses precisely the same expression, with a significant variation. Here, in our text, he says, 'The world passeth away'; there he says, 'The darkness has passed and the true light now shineth.' He sees a process installed and going on, in which the whole solid-seeming fabric of a godless society is being dissolved and melted away. And says he, in the midst of all this change there is one who stands unchanged, the man that does God's will.
But just for a moment we may take the lower point of view, and see here a flat contradiction of the Preacher. He said, 'Men go, and the world abides.' 'No,' says John; 'your own psalmists might have taught you better: "As a vesture shalt Thou change them, and they shall be changed."' The world, the earth, which seems so solid and permanent, is all the while in perpetual flux, as our later science has taught us, in a sense of which neither Preacher nor Apostle could dream. For just as from the beginning forces were at work which out of the fire-mist shaped sun and planets, so the same forces, continuing in operation, are tending towards the end of the system which they began; and a contracting sun and a diminished light and a lowered temperature and the narrower orbits in which the planets shall revolve, prophesy that 'the elements shall melt with fervent heat,' and that all things which have been made must one day cease to be. Nature is the true Penelope's web, ever being woven and ever being unravelled, and in the most purely physical and scientific sense the world is passing away. But then, because you and I belong, in a segment of our being, to that which thus is passing away, we come under the same laws, and all that has been born must die. So the generations come, and in their very coming bear the prophecy of their going. But, on the other hand, there is an inner nucleus of our being, of which the material is but the transient envelope and periphery, which holds nought of the material, but of the spiritual, and that 'abides for ever.'
But let us lift the thought rather into the region of the true antithesis which John was contemplating, which is not so much the crumbling away of the material, and the endurance of the spiritual, as the essential transiency of everything that is antagonism to the will of God, and the essential eternity of everything which is in conformity with that will. And so, says he, 'The world is passing, and the lust thereof.' The desires that grasp it perish with it, or perhaps, more truly still, the object of the desire perishes, and with it the possibility of their gratification ceases, but the desire itself remains. But what of the man whose life has been devoted to the things seen and temporal, when he finds himself in a condition of being where none of these have accompanied him? Nothing to slake his lusts, if he be a sensualist. No money-bags, ledgers, or cheque-books if he be a plutocrat or a capitalist or a miser. No books or dictionaries if he be a mere student. Nothing of his vocations if he lived for 'the world.' But yet the appetite is abiding. Will that not be a thirst that cannot be slaked?
'The world is passing and the lust thereof,' and all that is antagonistic to God, or separated from Him, is essentially as 'a vapour that appeareth for a little time, and then vanishes away,' whereas the man who does the will of God abideth for ever, in that he is steadfast in the midst of change.