“Will closed his eyes. He could not hear Jem go, not anymore; he did not want to know the moment when he left and Will was alone, did now want to know when his first day as a Shawdowhunter without a parabatai truly began. And if the place over his heart, where his parabatai rune had been, flared up with a sudden burning pain as the door closed behind Jem, Will told himself it was only a stray ember from the fire.”

“Jem touched the parabatai rune on his shoulder, through the thin material of his nightshirt. "I am not alone," he said. "Wherever we are, we are as one.”

“Zhi yin. Jem had told her once that it meant understanding music, and also a bond that went deeper than friendship. Jem played, and he played the years of Will's life as he had seen them. He played two little boys in the training room, one showing the other how to throw knives, and he played the ritual of parabatai: the fire and the vows and burning runes. He played two young men running through the streets of London in the dark, stopping to lean up against a wall and laugh together. He played the day in the library when he and Will had jested with Tessa about ducks, and he played the train to Yorkshire on which Jem had said that parabatai were meant to love each other as they loved their own souls. He played that love, and he played their love for Tessa, and hers for them, and he played Will saying, In your eyes I have always found grace. He played the too few times he had seen them since he had joined the Brotherhood- the brief meetings at the Institute; the time when Will had been bitten by a Shax demon and nearly died, and Jem had come from the Silent City and sat with him all night, risking discovery and punishment. And he played the birth of their first son, and the protection ceremony that had been carried out on the child in the Silent City. Will would have no other Silent Brother but Jem perform it. And Jem played the way he had covered his scarred face with his hands and turned away when he'd found out the child's name was James.He played of love and loss and years of silence, words unsaid and vows unspoken, and all the spaces between his heart and theirs; and when he was done, and he'd set the violin back in its box, Will's eyes were closed, but Tessa's were full of tears. Jem set down his bow, and came toward the bed, drawing back his hood, so she could see his closed eyes and his scarred face. And he had sat down beside them on the bed, and taken Will's hand, the one that Tessa was not holding, and both Will and Tessa heard Jem's voice in their minds.I take your hand, brother, so that you may go in peace.Will had opened the blue eyes that had never lost their color over all the passing years, and looked at Jem and then Tessa, and smiled, and died, with Tessa's head on his shoulder and his hand in Jem's.”

“She knew that she could not be Jem for Will. No one could. But slowly the hollow places in his heart were filling in. Having Cecily about was a joy for Will; Tessa could see that when they sat together before the fire, speaking Welsh softly, and his eyes glowed; he had even grown to like Gabriel and Gideon, and they were friends for him, though no one could be a friend as Jem had been. And of course, Charlotte's and Henry's love was as steadfast as ever. The wound would never go away... the haunted look faded from his eyes, she began to breathe more easily, knowing that look was not a mortal one.”

“Jem knotted his fingers in the material of Will's sleeve. "You are my parabatai," he said, "You said once I could ask anything of you.”

“Jem’s knees gave out, and he sank to the trunk at the foot of his bed, still playing. He played Will breathing the name Cecily, and he played himself watching the glint of his own ring on Tessa’s hand on the train from York, knowing it was all a charade, knowing, too, that he wished that it wasn’t. He played the sorrow in Tessa’s eyes when she had come into the music room after Will had told her she would never have children. Unforgivable, that, what a thing to do, and yet Jem had forgiven him. Love was forgiveness, he had always believed that, and the things that Will did, he did out of some bottomless well of pain. Jem did not know the source of that pain, but he knew it existed and was real, knew it as he knew of the inevitability of his own death, knew it as he knew that he had fallen in love with Tessa Gray and that there was nothing he or anyone else could do about it.”