It is thus written, "Things that are revealed belong to us and to our children forever" (Deut. Just as God Himself does not change, so the Torah which is His eternal testimony to Israel, cannot be changed.
Moses thus said, "You shall not add to the word which I command you, nor shall you subtract from it; you must keep the commandments of God your Lord, which I command you" (Deut. Therefore, no commandment of the Torah can ever be abrogated or changed.
Nevertheless, they were written by Moses as dictated by God.
Although the Book of Deuteronomy is written as the testimony of Moses, every word in it was written at the express commandment of God.
Since Moses' personality was completely nonexistent before God, his physical nature no longer acted as a barrier between him and God.
Moses' revelation was therefore of a direct nature, as it is taught, "All prophets saw through a dull glass, but Moses saw through a clear brilliant glass." Therefore, unlike other prophets, Moses received his revelation clearly, not masked by symbolism.
Unlike other prophets, whose revelation was limited, Moses had access to all the gates of wisdom.
It is thus written, "There has not arisen a prophet in Israel like Moses, whom God knew face to face" (Deut. Moreover, Moses was the first prophet with a message for others.
A person who denies the divine origin of even a single word or variant spelling or reading in the Torah is considered a nonbeliever who has no portion in the World to Come.
Concerning such a person, it is written, "Because he has despised God's word…
The authority of the Torah does not come from any miracle, but from God Himself.
It is a foundation of our faith to believe in the eternal authority of the Torah.
God likewise said, "[Moses] is trusted in all My house" (Numbers 12:7).