Okay, YA readers. I have a book I read a while back that I can't for the life of me remember the name or author.

It was about a guy who, at a temple, gets blinded by a vision. He is helped awake by an old guy. (in a wheelchair, I think. But this was Middle Ages Time, I think) Somehow, he had to go to a city where the people throw prisoners or other such people down from a tower to the bottom at sundown to make a sacrifice for the sun, so it would rise the next day.
The second perspective was by a girl who could see the auras of people, and I remember she got kidnapped in the city by an oil merchant and was almost sacrificed. The name of the book is I think the religion or god. It's YA and I think, or at least felt, that it had a sequel.
Thanks for the help!