Ong Namo Guru Dev Namo, is what we chant at the beginning of a Kundalini class which means, I bow to the subtle divine wisdom.
Ong is the infinite creative energy experienced in manifestation and activity. It is a variation of the cosmic syllable Om which, denotes God in an absolute or unmanifested state. God as creator is called Ong.
Namo comes from the Sanskrit Namaste , means reverent greetings.
Guru Dev Namo means "I call on the divine wisdom," wherby you bow before your higher Self to guide you in using the knowledge and energy given by the Cosmic Self.