The Secret Name of Godi

i don't know the origin of it, but i had befriended this a 30 third degree freemason who kind of became like my mentor. Part of the masonic methos that you also live through as an initiate is to die and be resurrected using a secret name of god. One of his first questions to me was like, if i believe in angels or not. And a o that like lead on a whole thing. So he gave me a book, am god ionyo,. Remember what book it was? I'm drawing a blank. Which one? But he signed the inside of it with that quote, saying, this is the secret to die before you die, and realize