ONLY THEIR OFFICIAL FATHER AND MOTHER

Chills on this one...
"Vasudeva and Devaki were only Their official father and mother."
That did it. Of course anything connected to Krishna is completely transcendental and superb. But here we see official only goes so far. In Vrandavan lila there is nothing "official." Krishna simply transferred Himself to the lap of Mother Yasoda for love. That's it. Nothing more and nothing less. There are no marriage certificates, no birth certificates, no property deeds, no educational requirements, no complicated political situations.

"The devotees understand that actually Krishna was the son of mother Yasoda. Although Krishna first of all appeared as the son of Devaki, He immediately transferred Himself to the lap of mother Yasoda, and His childhood pastimes were blissfully enjoyed by mother Yasoda and Nanda Maharaja. This fact was also admitted by Vasudeva himself when he met Nanda Maharaja and Yasoda at Kuruksetra. He admitted that Krishna and Balarama were actually the sons of mother Yasoda and Nanda Maharaja. Vasudeva and Devaki were only Their official father and mother. Their actual father and mother were Nanda and Yasoda." KB 2.35