The riddle-like nature of self-inquiry: where is God?

Self-inquiry -- the search for the true "I" -- cannot simply be a matter of any kind of concentration or search by the mind. One can quiet the mind that way, but then one hits a wall. But that mental search quiets the mind and, eventually, through a process of concentration, allows something to emerge that goes beyond the conceptual. I demonstrate through the Hindu story of Prahlada, and with reference to the text Vakya Vritti.