Amobi and the Door Beyond Time - The Stormbringer Chronicles #1
Amobi is the super awesome priest of Amadioha, the god of thunder and lightning. He just doesn't know it yet. But after he accidentally makes a church explode and vaporizes a security guard, he starts to realize that there might be some truth to his grandfather's stories after all.
Now, accompanied by his two best friends, who are priests themselves, they must complete an ancient quest to free the gods from their prison before the world is engulfed in eternal darkness and completely annihilated. Strap on your seat-belts. It's going to epic.