One of them is certainly false.

And if the Christian, conscious of the difficulty of reconciling the New, with the Old, Testament, attempts to support the New, at the expense of the Old, Testament, upon which the former is, and was, built by the founders of Christianity; then the Jew would tell him, that he acts as absurdly as would the man who should expect to make his house the firmer, by undermining, and weakening its foundation.
So that whether the Christian affirms, or denies, he is ruined either way.

For he is reduced to this fatal dilemma.

If the Old Testament contains a Revelation from God, then the New Testament is not from God, for God cannot contradict himself: and it can be proved abundantly, that the New Testament is contradictory, and repugnant to the Old and to itself too.

If, on the other hand, the Old Testament contains no Revelation from God, then the New Testament must go down at any rate because it asserts that the Old Testament does contain a Revelation from God, and builds upon it, as a foundation .-- E.
* There was nothing which gave the author, in writing this Book, so much uneasiness, at the apprehension of being supposed to entertain disrespectful sentiments of the Founder of the Christian Religion.