Sat, Truth, the Absolute, Bliss;

Tat, universal intelligence or consciousness;

Aum, cosmic intelligent creative vibration, word-symbol for God.

The Trinity: Father, Son, Holy Ghost, or Sat, Tat, Aum.

The Father (Sat) is God as the Creator existing beyond creation (Cosmic Consciousness).

The Son (Tat) is God's omnipresent intelligence existing in creation (Christ Consciousness or Kutastha Chaitanya).

The Holy Ghost (Aum) is the vibratory power of God that objectifies and becomes creation.

See Aum and Trinity.