Alec Lightwood (to Clary): You did this. You activated the sword?

Clary Fray: No.

Jace Wayland: I did it. I thought I was destroying it, Alec, but…

Alec Lightwood: Where’s Magnus? He wasn’t here, was he?

Jace Wayland: I… I don’t know.

Clary Fray: We portaled in upstairs. We split up.

Alec Lightwood: Oh, God.

From Shadowhunters – Season 2 Episode 10: ‘By the Light of Dawn’ (2×10)