Much more, then, shall we look for the influence of Environment on the spiritual nature of him who has opened correspondence with God. Reaching out his eager and quickened faculties to the spiritual world around him, shall he not become spiritual? In vital contact with Holiness, shall he not become holy? Breathing now an atmosphere of ineffable Purity, shall he miss becoming pure? Walking with God from day to day, shall he fail to be taught of God?
Growth in grace is sometimes described as a strange, mystical, and unintelligible process. It is mystical, but neither strange nor unintelligible. It proceeds according to Natural Law, and the leading factor in sanctification is Influence of Environment. The possibility of it depends upon the mobility of the organism; the result, on the extent and frequency of certain correspondences. These facts insensibly lead on to a further suggestion. Is it not possible that these biological truths may carry with them the clue to still profounder philosophy--even that of Regeneration?
Evolutionists tell us that by the influence of environment certain aquatic animals have become adapted to a terrestrial mode of life. Breathing normally by gills, as the result and reward of a continued effort carried on from generation to generation to inspire the air of heaven direct, they have slowly acquired the lung-function. In the young organism, true to the ancestral type, the gill still persists--as in the tadpole of the common frog. But as maturity approaches the true lung appears; the gill gradually transfers its task to the higher organ. It then becomes atrophied and disappears, and finally respiration in the adult is conducted by lungs alone.[80] We may be far, in the meantime, from saying that this is proved. It is for those who accept it to deny the justice of the spiritual analogy. Is religion to them unscientific in its doctrine of Regeneration? Will the evolutionist who admits the regeneration of the frog under the modifying influence of a continued correspondence with a new environment, care to question the possibility of the soul acquiring such a faculty as that of Prayer, the marvelous breathing-function of the new creature, when in contact with the atmosphere of a besetting God? Is the change from the earthly to the heavenly more mysterious than the change from the aquatic to the terrestrial mode of life? Is Evolution to stop with the organic? If it be objected that it has taken ages to perfect the function in the batrachian, the reply is, that it will take ages to perfect the function in the Christian. For every thousand years the natural evolution will allow for the development of its organism, the Higher Biology will grant its product millions. We have indeed spoken of the spiritual correspondence as already perfect--but it is perfect only as the bud is perfect. "It doth not yet appear what it shall be," any more than it appeared a million years ago what the evolving batrachian would be.
But to return. We have been dealing with the scientific aspects of communion with God. Insensibly, from quantity we have been led to speak of quality. And enough has now been advanced to indicate generally the nature of that correspondence with which is necessarily associated Eternal Life. There remain but one or two details to which we must lastly, and very briefly, address ourselves.