There are some experiences too profound for mere words to fully encapsulate, but this phrase comes so very close. Aziraphale knows the significance, knows what sort of a connection and commitment they represent, and what Crowley means to whisper them to him. Maybe he should have them drawn up and hung above this very bed. What are they doing now, after all, if not celebrating their union?

Crowley may quote scripture all he like, as Aziraphale is quite fond of the purpose. He returns the kiss, far better than any wine, then blinks at the comment that follows. Afterglow...?

"Oh..." He blushes, adding a pink undertone to the glow that emanates from all of him. "I suppose I'm simply so happy that my corporation can't contain it all."