Will pushed his hands through his damp hair. “Oh, yes,” he said bitterly. “Perhaps in some other life, beyond this one, when we have passed beyond the river, or turned upon the Wheel, or whatever kind words you want to use to describe leaving this world, I shall find my friend again, my parabatai. But I have lost you now—now, when I need you more than I ever did!

Clary stopped dead in her tracks. "Simon?" "Oh, God," said Jace, sounding resigned. "And here I'd actually hoped I'd got hold of something interesting." -Clary and Jace pg. 114

You swore to stay with me,” he said. “When we made our oath, as parabatai. Our souls are knit. We are one person, James.” “We are two people,” said Jem. “Two people with a covenant between us.” Will knew he sounded like a child, but he could not help it. “A covenant that says you must not go where I cannot come with you.” “Until death,” Jem replied gently. “Those are the words of the oath. ‘Until aught but death part thee and me.’ Someday, Will, I will go where none can follow me, and I think it will be sooner rather than later.

Or perhaps this hostility of yours is the pretense. Love does make liars out of your kind.

There's plenty of sense in nonsense sometimes, if you wish to look for it.

Concerned about my safety, are you? -William Herondale.

Set me as a seal upon thine heart, as a seal upon thine arm: for love is strong as death.