The Vow of obedience is essentially an act of mystic and spiritual love.
The Son can travel through certain stretch of the spiritual path with will effort, but he must set aside his will at certain point where routes acquire a transcendent character.
As the Son enters the Great Cafh’s Current, he promises to carry out faithfully his duties and responsibilities that the Regulation establishes. His permanence in Cafh is only conditioned by the strict observance of the Regulation that the Superiors shall offer him; but if his early craving for God and liberation are greater, if the Divine Love hurts his chest and the Divine Mystery further inflames his mind, a mere observance of articles and clauses of the Regulation shall not be enough, but he must contact the very Spirit of the Regulation.
Cafh is essentially divine, and undetermined in itself. So, it manifests itself through the Mystical Body as a whole.
Cafh is a simple idea multiplied by reversibility, expanded by participation, and determined as presence manifested.