Transcendental (The Transcendental Machine)

"Riley, a veteran of interstellar war, is one of many beings from many different worlds aboard a ship on a pilgrimage that spans the galaxy. However, he is not journeying to achieve transcendence, a vague mystical concept that has drawn everyone else on the ship to this journey into the unknown at the far edge of the galaxy. His mission is to find and kill the prophet who is reputed to help others 'transcend'"--