That God can do anything and everything, that is consonant to his moral perfections, and which does not imply a contradiction to the nature of the things themselves, and the essential relation which they bear to each other, none will dispute. But to suppose, that inasmuch as God is all-powerful, he can therefore do everything, which we in our ignorance of nature or of moral fitness may ascribe to him, without understanding, whether it is either consonant to moral rectitude, or to the nature of the things themselves, and the immutable relations and connections which they bear to each other, or not, is great weakness and folly. That God cannot in the exercise of his providence or moral government, counteract the perfections of his nature, or do any manner of injustice, is manifestly certain; nor is it possible for God to effect a contradiction in the natural world, any more than in the moral. The impossibility of the one results from the moral perfections of God, and the impossibility of the other from the immutable properties, qualities, relations and nature of the things themselves, as in the instances of the mountains, vallies, &c., before alluded to, and in numberless other such like cases. Admitting a revelation to be from God, it must be allowed to be infallible, therefore those to whom it may be supposed to have been first revealed from God, must have had an infallible certainty of their inspiration: so likewise the rest of mankind, to whom it is proposed as a Divine Law, or rule of duty, should have an infallible certainty, that its first promulgators were thus truly inspired by the immediate interposition of the spirit of God, and that the revelation has been preserved through all the changes and revolutions of the world to their time, and that the copies extant present them with its original inspiration and unerring composure, or are perfectly agreeable to it. All this we must have an infallible certainty of, or we fail of an infallible certainty of revelation, and are liable to be imposed upon by impostors, or by ignorant and insidious teachers, whose interest it may be to obtrude their own systems on the world for infallible truth, as in the instance of Mahomet.