The episode features classic Supernatural banter and significant lore reveals: : Sam : "God kicked this thing's ass once before, right?"
Dean : "Yeah, it'd be nice if he put down the Mai Tai and showed up for work." : Dean : "You know where you are? What's the date?" Castiel : "Earth. Several billion years from the beginning." Amara on the Light and Dark : Young Amara : "He [God] tricked me... He sealed me away." Supernatural 11x3
: Crowley tries to mentor the young Amara, hoping to use her power for his own gain. He discovers her dark hunger when she consumes her demon nanny's soul to grow stronger. He sealed me away
The Darkness : "I am what you are becoming, and we are mightier than God." and we are mightier than God."