The Stars that Rise at Dawn: Book one of the Šehhinah Trilogy (revised edition)

Elīya knows that the most important thing for living right is a tireless dedication to ethics, so she thought she would share everything with her best friend Tamar, including a normal life as college students, as they once promised each other. But two years ago, Tamar vanished into the desert to look at the secret form of God for a staggering price, without even giving Elīya an explanation. Yenatru thought he had two friends--until, with only one left, it turned out he wasn't as close to Elīya as he thought. He can't even manage to tell Elīya that he's been delving into some serious magic of his own. No one knows that he's practicing Theurgy — creating things with the power of his soul. Except the woman he meets in the library, who calls herself Lucifer. But Yenatru's new friend can't stay a secret forever. Elīya has something she wants so badly that she would do anything for it—anything at all. And it's Lucifer herself who might just be able to offer her a deal.