Dimidium Angelus: Bane of the Gods by Dennis Parker
As Lucifer fell from Heaven, he was not alone. The Greek and Norse gods, as they would later be known, were originally angels allied with Lucifer in the rebellion against God. Now, their children have found the truth and, under God’s command, have bound their parents. The archangels of Hell have made it their mission to release the gods and return them to their former glory. The Dimidium Angelus, as the children are known, fight the forces of evil through thousands of years in order to keep their parents bound. The children find they may be in over their heads, however, as Azazel, the most powerful archangel they have faced in their immortal lives, joins the fight. Only the fulfillment of an ancient prophecy will bring them victory.