The Unspoken Name (The Serpent Gates #1) by A. K. Larkwood
A. K. Larkwood's The Unspoken Name is a stunning debut fantasy about a young priestess sentenced to die, who at the last minute escapes her fate; only to become an assassin for the wizard who saved her.
What if you knew how and when you will die?
Csorwe does—she will climb the mountain, enter the Shrine of the Unspoken, and gain the most honored title: sacrifice.
But on the day of her foretold death, a powerful mage offers her a new fate. Leave with him, and live. Turn away from her destiny and her god to become a thief, a spy, an assassin—the wizard's loyal sword. Topple an empire, and help him reclaim his seat of power.
But Csorwe will soon learn—gods remember, and if you live long enough, all debts come due.