[s5e19] Hammer Of The Gods -

: Gabriel (initially appearing as the Trickster/Loki) arrives to try and save the brothers. He warns the gods that they are severely outmatched by Lucifer.

: This episode confirms that the "Trickster" the Winchesters have encountered previously is actually the Archangel Gabriel , who fled Heaven because he couldn't stand the fighting between his brothers. [S5E19] Hammer of the Gods

The episode features a diverse pantheon of deities who have gathered to discuss the Christian Apocalypse: led by Kali

: The gods, led by Kali, seek to use the Winchester brothers as bargaining chips to stop the impending Apocalypse led by Lucifer and Michael. [S5E19] Hammer of the Gods