Patanjali Yog Sutras

patanjali yoga sutra
samadhipad
Sutra 26

sutra 26 purveshaamapi guruh kaalenanvacchedaat
purveshaamapi guruh kaalenanvacchedaat

Purveshaam: Of the ancestors
Api: Also
Guruh: Guru
Kaalen: With time
Anvachhedaat: Undivided, uninterrupted, unlimited

Patanjali goes further to illustrate the quality of ishvar,

(That Ishvar) is the Guru of ancestors also, since He is not bound by time, is timeless, eternal
Divine, who is the subtlest of the subtle, was there before time was created. He has no beginning or end; he is older than the oldest ancestors, the source of gyan for all bygone generations.