After defeating Alduin in Sovngarde, you return to the land of the living upon The Throat of the World, greeted by a swarm of dragons, and Paarthurnax, who has some parting words to share with you. An acquaintance from earlier in your quest also pays a visit amongst the snow and swirling dragons.

You'll note in place of the HUD (disabled with console commands) I've used subtitles to show my responses to Paarthurnax's quandary.