‘When he is brought to nothing, the highest degree of humility, the spiritual union between his soul and God will be effected‘.
So wrote St. John of the Cross, the Spanish Mystic.
St. John of the Cross who gave us the scary poem: ‘Dark Night of the Soul’ [La noche oscura del alma] and his close collaborator Teresa of Ávila, have influenced every famous modern Western Mystic [Merton, Dali, et al].
The roots of St. John’s Mysticism, as that of Teresa, go back to medieval Neo-Platonism, the ‘One’ of Plotinus [Enneads], itself linking to Greek and Sanskrit text.
But more directly for the observant Christian: ‘Thou canst not see my face: for there shall no man see me, and live‘ [Exodus: 33].