“He is a Shadowhunter,” said Jocelyn. “His loyalty will be to Clave and Covenant.”“He’s my friend,” said Magnus coldly. “His loyalty is to me.”

“Such loyalty is admirable, of course,” said Scrimgeour, who seemed to be restraining his irritation with difficulty, “but Dumbledore is gone, Harry. He’s gone.”“He will only be gone from the school when none here are loyal to him,” said Harry, smiling in spite of himself.”

“He liked the works of his friends, which is beautiful as loyalty but can be disastrous as judgement.”

“Isabelle," she said, lightening her tone with an obvious effort, "your loyalty to your friend is understandable --""He's not my friend." Isabelle looked over at Jace, who was staring at her in a sort of daze. "He's my brother.”

“Of course he loves me. I’m his sister.”“Blood isn’t love,” said Magnus, and his voice was bitter.”

“As for this," Magnus said sliding the stele into Jace's jeans pocket, "keep it in your pants, Shadowhunter." - 219”