Jonathan Morgenstern: You want me to be your weapon.

Seelie Queen: I want you to be my king. Together, we will destroy the Shadowhunters and rule the earthly realm side by side.

Jonathan Morgenstern: I prefer to rule alone.

(Seelie Queen turns into the child version of herself...)

Seelie Queen: Please, Jonathan. Please. You wouldn't dare hurt a child. Have mercy.

Jonathan Morgenstern: Mercy is for humans. And I'm no longer human.