The Saints of Ornala. The Banished Legend, #5

Escaping the prison, and fleeing his country, were the least of Odin Karussa's worries. Now tasked with leading a lost people to salvation, Odin is once again placed in a position of power-power that could either make, or break, his spirit. Aided by his friends, Odin believes that they can begin a new life free of tyranny-until a High Priest of Norda arrives to deliver a vision from the Gods. Told, in no uncertain detail, that he will return to liberate the mainland, Odin dismisses the priest as little more than delusional.
However he may feel, Odin is given one certainty: that his refusal to return to the mainland will come at a cost. It is only when the priest's vision comes to pass that Odin is forced to make a decision. He will return to the mainland to liberate the lands he once called home. His only question is whether or not he will succeed. This is the final book in The Banished Legend.