If someone’s never eaten a banana, how could you describe the taste to them?
If you meditate regularly and discover the immortal within yourself and the person you’re talking to doesn’t, how could you describe it to them?
The first lines in the Tao Te Ching say “The way that can be spoken of is not the eternal way”.
This is why Jesus told parables;
The Buddha told sutras;
Zen uses koans.
In Karate the title ‘sensei’ means one who’s gone before and therefore points the way.
A ‘Guru’ is one who sheds light into darkness.
All we can do is provide guidance and directions for a student to make their own journey until they discover their own ‘original face’.
Those that live in their intellect and thoughts will never understand anything beyond them.
If you work on your mind with your mind, how can you not be confused?