Om is the sound of Om heard in deep meditation. Om is the vibratory
creation. Tat is the light seen in deep meditation. Tat is the Christ
consciousness. Sat is the bliss beyond creation experienced in deep
So Sat is the creator. Tat is the created. Om is the creating. This
triune nature of God is understood in Christianity as the Father, the
Son and the Holy Ghost.
These can be read about in Swami Sri Yukteswar's "Holy Science",
Self-Realization Fellowship, Los Angeles, CA. Also they can be learned
about and experienced by the Kriya Yogi; refer to Ananda Church of
Self-Realization, Nevada City, California.