Hide (one's) head in the sand informal verb phrase
To avoid, or attempt to avoid, a specific problem by pretending not to see it.
Hide your head in the sand if you want to. Anyway, you must be responsible for the accident.
Don't hide your head in the sand. You need quick treatment to stop the rapid growth of leukemia cells.
To hold tightly to something with one's fingernails to avoid falling
The inexplicable or concealed place or state indicates the afterlife.
I'm very sorry for your dad. He's beyond the veil.