The mountain on which God made his revelation bears six names: It is called the Desert Sin, because God there announced His commandments; it is called the Desert Kadesh, because Israel was sanctified there; the Desert Kadmut because the pre-existing Torah was there revealed; the Desert Paran because Israel there was greatly multiplied; the Desert Sinai because the hatred of God against the heathens began there, for the reason that they would not accept the Torah; and for this same reason is it called Horeh, because the annihilation of the heathens was there decreed by God. For the wrath of God against the heathens dates from their refusal to accept the Torah offered them.
The Six Secret Names of Mount Sinai
Legends of the Jews 2:22