Ketch had brought back Gabriel. His mouth was sewed shut, he was all bloody and for some reason couldn't seem to use his angel powers to heal himself. He seemed to be a shell of himself after what Asmodeus did to him.

Dean and Ketch left to find Mary and Jack, leaving Gabriel, Sam, and Cas.

You were his lover before he 'died' and so Sam called you basically immediately and gave you a fair warning of the condition Gabriel was in... but you didn't care you just had to see him...