In the text: 10.1-4; 10.44; 10.82-85; 11.2-5

Vasudeva and Devaki

वसुदेव-देवकी

Imprisoned on their wedding day by Kamsa, they watched six sons die before beholding the four-armed Lord at midnight.

Appears in

Krishna is born in Kamsa's prison — Skandha 10, adhyayas 1-4 — A voice warns Kamsa that Devaki's eighth child will kill him; six die, and the eighth is carried across the Yamuna at midnight.
Entering Mathura, the bow broken, and Kamsa's fall — Skandha 10, adhyayas 41-44 — Blessing the flower-seller, weaver, and hunchbacked Trivakra in the streets, Krishna snaps Shiva's bow, fells the elephant, and slays Kamsa.
The solar eclipse at Kurukshetra — Vraja and Dvaraka meet — Skandha 10, adhyayas 82-84 — At a solar eclipse at Samantapanchaka, the cowherds and gopis of Vraja meet Krishna again, and the queens tell Draupadi how they wed.
The sages' curse on the Yadus and Vasudeva's question — Skandha 11, adhyaya 1 — To lift the Yadu clan from the earth, Krishna lets young princes mock the sages with an iron pestle, and Narada comes to Vasudeva.
The nine Yogeshvaras teach King Nimi — Skandha 11, adhyayas 2-5 — Answering Vasudeva, Narada recounts how Rishabhadeva's nine yogi sons answered nine questions from King Nimi on Bhagavata-dharma.

Devotion under trial — A boy thrown from cliffs, a child sent out by his stepmother: faith in the Bhagavatam is proven where it costs the most.
Surrender and grace — Rescue comes when strength runs out: the elephant, the queen and the king are saved at the point they stop relying on themselves.

How did Vasudeva keep his word to Kamsa when the wedding-day voice spoke from the sky?
Why did Devaki ask Krishna to hide his four-armed form right after his birth?
What did Vasudeva ask Narada in the eleventh book that brought forth the story of the Nine Yogis?