In the Talmud (Babylonian Talmud, Shabbat 105a), Rabbi Yochanan teaches that Anochi is an acronym for: “Ana Nafshi Ketivat Yehavit”.
This can be understood as that G-d Himself wrote and gave the Torah but these words could also be understood as: "I give Myself in writing", or “I state My soul/essence in writing”.
So what do these words imply? Does the Torah encompasses some of G-ds essence? Does it expresses G-ds essence in some way? What does it mean when G-d is in it; when what He wrote and gave contains G-ds soul?