Ong is a sacred and mystic sound and syllable, possibly first introduced and extensively used by Guru Nānak. Due to its similarity in sound and usage in sacred texts and mantras, it seems to be a variation of the more ancient Om or Aum.
To sing of the praises and wonders of the unfathomable, infinite, all-pervading Divine in devotional poetry has been, since long, one of the most powerful and beautiful ways of expression and exercise of union with the Beloved.
Mantra transforms spirit into matter and creates the best possible reality through the right service of the mind. It can heal by opening space and capacity to absorb pain and illusion, and it lightens the darkness.