1. The Torah Kedumah from 'Moshe Rabbeinu'.
2. Deuteronomy, D, a composite source of Torah SheB'al Peh.
3. Priesty contributiom, P, a composite source of Torah SheB"al Peh, which includes the Holiness code.
As such the Torah is internally inconsistent - D and P often do not agree.
Even worse, in the Torah Kedumah there are E and J, and also they have different voices.
Can this be the Torat HaShem? Yes, it is Torat HaShem. From different voices, HaShem has crafted "a document" that is One. Now, there is Mashma'ut to the above insight. Not all voices in the Torah are equally D'Oraita, and that may change Halacha. A task for the Sanhedrin.
שלמות התקון יהיה בזמן של מלך המשיח, שאז מתפשט [שם הוי"ה] בתקון שלם, והצרוף עולה בדרך אחרת, כמו שעולים המדרגות בדרך האמת
(Ramchal, Tikkun 8)