You should know that God cannot be known
Veda also says that God is un-imaginable, who is beyond words, mind, intelligence and logic and hence God alone knows God (Brahmavit Brahmaiva...). You should know that God cannot be known (Yasyaamatam…). But such God enters the world through a medium (Tadevaanu Praavishat...) and God becomes that medium while keeping His separate identity of His real form (Satchatyatcha...). Therefore, the essence of the Veda is very clear that the absolute God is un-imaginable, He enters a human being as a medium for the sake of preaching knowledge and He remains in His original form and at the same time gets identified with the human form also.