"I don't like you," Uriel said bluntly. He looked to Sam. "And I really, really don't like you. But I think, if I had to choose between you two and her..." He waved a hand in the air, as if that would explain whatever it was that he was trying to say. It was hard for him to even put himself in a situation where he could almost make it sound like he'd have a pleasant interaction with a human. "I want you to see what she really is. Manipulative. Greedy. Willing to do whatever it takes to get what she desires. Currently? She wants to do nothing more than make you her pet. You're her safety net, Sam Winchester. She wants to use you. For protection. For power. She'll be that little voice, whispering in your ear when you're standing at the top of the world. And she knows it."
Sam scoffed. "I don't need to hear this from you." And he didn't think that Heather needed it either.
Uriel nodded. "I know you don't. I think it's time you saw it. Don't you? Why not take a little trip to the future? Don't you want to see what Ruby has been doing to you? Don't you want to know all about what she's already done?"