Lastly, we have the witness of the five books of Moses, a most convincing proof. The third month after leaving Egypt God laid the foundation of four books out of the five in the giving of the moral law and its accompanying ceremonial law. Aaron and his sons were set apart for the priesthood; the tribe of Levi for the service of the sanctuary. How important became the genealogies of the Bible and how carefully they were extended generation by generation. Step by step we go back on firm and solid ground.
Suppose the five books of Moses had not been written by Moses and that he never gave the law nor did any of the wonderful things attributed to him, we are faced with a greater difficulty. Who is this great man, this genius, who did write them, and, beyond this monumental work of genius of the highest order, has left no other trace of himself, so that we do not even know his name? And further, if he were a man of genius, and wrote the Pentateuch, and the whole work were a tissue of lies, how is it that he has put upon record such a code of laws of moral excellence, as has never been equaled? It is infinitely easier to believe that Moses is the author of the Pentateuch than to attribute its authorship to any other person.