And redemption depends upon the heart, of which it is stated: ‘the heart sees...’ And because of this, the Masters of the Mishnah have established:xlviSee BT Sanhedrin 99a ‘To my heart I have revealed it, but to My limbs I have not revealed it’. What is the meaning of ‘to My heart’?
But the Written Torah is called ‘My heart’, and the Oral Torah is called ‘mouth’. And the Masters of the Mishnah established, that from the heart to the mouth it is not revealed. ‘To My heart (le-libiy, =72) I have revealed it’ – this is the Name of 72 Names, and they are ‘the seventy faces of the Torah’,xlviiBemidbar Rabbah 13:15 that are suspended from the letter Beiyt ב (=2).