ETERNAL

 "So far as I am concerned, I have accepted you as my disciple, and you have accepted me as your spiritual father. This relationship cannot be ended anymore. It is eternal."
(Srila Prabhupada letter to Rayarama, July 9, 1969)

>>> This relationship cannot be ended anymore. It is eternal.<<< 
definition of eternal.... lasting or existing forever; without end..... or beginning." 

The Blessed Lord said: Many, many births both you and I have passed. I can remember all of them, but you cannot,… BG 4.5
http://prabhupadabooks.com/bg/4/5?d=1