Spiritual immersion or simply immersion is IngLeeYuTyayLinReh in Rehnadee Shum. It names a spiritual event that occurs to reveal to a meditator the next meditation map after attaining the goal of the current meditation map.
Meditators who use Rehnadee Shum will be accustomed to its Culture of Meditation – Shumsuh. Shumsuh lays out three elements in meditation which are, firstly the preparation for meditation – LeeEeSee, secondly the practice of meditation which is Shumnam and thirdly the Rehnadee Shum Diary – LeeYuTyayLinReh. 
Spiritual Immersion, IngLeeYuTyayLinReh, is nestled in the third element which is the Rehnadee Shum Diary. This diary is used to journal meditations and is as important to the practice of meditation as meditating itself. By journaling the attainment of the goal of a meditation can be captured and once acknowledged the meditator will continue to practice the meditation and experiencing its goal until he or she becomes in a sense 'saturated' by the experience. This saturation marks the attainment of mystic proficiency of the map the map in practice which in Rehnadee Shum is IngLeeYuTyayLinReh .
The diary will capture this achievement of immersion and it will provide clues as to the next steps for the mystic to continue with the next meditation map. The map that follows is deciphered from the clues in the diary entry as IngLeeYuTyayLinReh reached. These clues will come from glimpses of insight or flashes of mystic experience that point to the next meditation goal to be attained. With these in hand a Rehnadee Shum mystic can confer with a Shum Guide or Master for the next map, especially for mystics at the Beginner Level. More experienced Rehnadee Shum mystics can scan through the Rehnadee Shum Lexicon or the Meditation Map Libraries to find the next mystic experience that most resonates with their mystic senses having reached IngLeeYuTyayLinReh.

Related Links: Shumsuh – The Culture of Meditation, QnA about meditation maps, Goals or Rehnadee Shum Meditations