" And what condition is -" Gabriel broke off with a sigh. "Ah," he said. "Brother Zachariah."
"This monster is violent," said Will. "We might need a healer. Someone with the power of a Silent Brother. This is a special situation."
"I cannot recall a situation you did not think was special and required his presence," said Gabriel dryly. "You have been known to call upon Brother Zachariah for a broken toe."
"It was turning green," said Will.
"He's right," said Tessa. "Green doesn't suit him. Makes him look bilious. "

― Cassandra Clare , The Whitechapel Fiend (Tales from the Shadowhunter Academy, #3)