Just touching a coin

"The Order of the Blackened Denarius," Michael said. "They see an opportunity in this matter. A chance to do great harm."
"Silver coins." I took a deep breath. "Like the one you wrapped up in blessed cloth. Thirty pieces of silver, eh?"
He nodded. "Whoever touches the coins is tainted by the Fallen within. Tempted. Given power. The Fallen leads the mortal deeper and deeper into its influence. Never forcing them. Just offering. Until eventually they have surrendered enough of themselves and-"
"The thing gets control of them," I finished.
Michael nodded. "Like Rasmussen. We try to help them. Sometimes the person realizes what is happening. Wants to escape their influence. When we face them, we try to wear the demon down. Give the person taken the chance to escape."
"That's why you kept talking to it. Until its voice changed. But Rasmussen didn't want to be free, did he?"
Michael shook his head.
"Believe it or not, Michael, I've been tempted once or twice. I can handle it."
"No," Michael said. "You can't. Against the Denarians, few mortals can. The Fallen know our weaknesses. Our flaws. How to undermine. Even warned and aware of them, they have destroyed men and women for thousands of years."


Death Masks Chapter 7, Page 74-75