Only an expert physician can prescribe poison to heal. For a spiritual healer this means saying "I."
The humble sage Hillel said "If I am here all is here." His "I" did not refer to himself but to God.
How many stars can you see in the sky? A few thousand. But there are trillions of stars out there.
How much Torah do you know? A drop in the ocean! No, you know nothing. Finite is naught to infinite.
To be nothing is to know that you can't know. Only God knows. And God and His knowledge are one.