The Chronicles of Gan: The Thorn

Three tribes are at war on the planet Gan, unaware that the sign of Christ's birth on an unknown world - Earth - is about to appear in the heavens. During a bloody skirmish with Gideonite troops, Jonathan of Daniel spares Pekah, a young enemy soldier. His merciful act results in a chain of events that saves the life of his betrothed, ends the war, and gives birth to a national hero.