Clary Fairchild: We can’t let her bring my brother back to life.

Simon Lewis: Sebastian?

Clary Fairchild: Jonathan.

Simon Lewis: Two brothers?

Clary Fairchild: Same guy.

Simon Lewis: Oh. Cool, cool, cool. OK.

From Shadowhunters – Season 3 Episode 10: ‘Erchomai’ (3×10)