Such on a full and fair investigation must be confessed to be the state of facts; and how can this be accounted for on any other supposition, than that of some original taint, some radical principle of corruption? All other solutions are unsatisfactory, whilst the potent cause which has been assigned, does abundantly, and can alone sufficiently account for the effect. Thus then it appears, that the corruption of human nature is proved by the same mode of reasoning, as has been deemed conclusive in establishing the existence, and ascertaining the laws of the principle of gravitation: that the doctrine rests on the same solid basis as the sublime philosophy of Newton: that it is not a mere speculation, and therefore an uncertain though perhaps an ingenious theory, but the sure result of large and actual experiment; deduced from incontestable facts, and still more fully approving its truth by harmonizing with the several parts and accounting for the various phænomena, jarring otherwise and inexplicable, of the great system of the universe. Revelation, however, here comes in, and sustains the fallible conjectures of our unassisted reason. The Holy Scriptures speak of us as fallen creatures: in almost every page we shall find something that is calculated to abate the loftiness and silence the pretensions of man. "The imagination of man's heart is evil from his youth." "What is man, that he should be clean? and he which is born of a woman, that he should be righteous[5]." "How much more abominable and filthy is man, which drinketh iniquity like water[6]?" "The Lord looked down from heaven upon the children of men, to see if there were any that did understand, and seek God. They are all gone aside; they are altogether become filthy: there is none that doeth good, no not one[7]." "Who can say, I have made my heart clean, I am pure from my sin[8]?" "The _heart_ is deceitful above all things, and desperately wicked, who can know it." "Behold, I was shapen in wickedness, and in sin hath my mother conceived me." "We were by nature the children of wrath, even as others, fulfilling the desires of the flesh and of the mind." "O wretched man that I am, who shall deliver me from the body of this death!"--Passages might be multiplied upon passages, which speak the same language, and these again might be illustrated and confirmed at large by various other considerations, drawn from the same sacred source; such as those which represent a thorough change, a renovation of our nature, as being necessary to our becoming true Christians; or as those also which are suggested by observing that holy men refer their good dispositions and affections to the immediate agency of the Supreme Being. SECTION II. _Evil Spirit.--Natural State of Man._