1. Spiritual television

    The Absolute Personality of Godhead is not different from His transcendental name, form, pastimes and the sound vibrations thereof. As soon as a pure devotee engages himself in the pure devotional service of hearing, chanting and remembering the name, fame and activities of the Lord, at once He becomes visible to the transcendental eyes of the pure devotee by reflecting Himself on the mirror of the heart by spiritual television. Therefore a pure devotee who is related with the Lord in loving transcendental service can experience the presence of the Lord at every moment.

    From Srila Prabhupada’s purport to SB 1.6.33