Eliza Sapphire

“He pointed at Brother Jeremiah, who had come to a halt in front of a statue just slightly taller than he was, its base overgrown with moss. The statue was of an angel. The marble of the statue was so smooth it was almost translucent. The face of the angel was fierce and beautiful and sad. In long white hands the angel held a cup, its rim studded with marble jewels. Something about the statue tickled Clary’s memory with an uneasy familiarity. There was a date inscribed on the base, 1234, and words inscribed around it: NEPHILIM: FACILIS DESCENSUS AVERNI.
“Is that meant to be the Mortal Cup?” she asked.
Jace nodded. “And that’s the motto of the Nephilim—the Shadowhunters—there on the base.”
“What does it mean?”
Jace’s grin was a white flash in the darkness. “It means ‘Shadowhunters: Looking Better in Black Than the Widows of our Enemies Since 1234.’”
“Jace—”
It means, said Jeremiah, The descent into Hell is easy.”
― Cassandra Clare, City of Bones