‘We don’t have time for theological debates, or philosophical discussion on the nature of evil,’ he said. ‘Men have been killing each other for centu… - David Gemmell

Kings are chosen by the Source, so it is said ... Therefore those who fight for the king can be said to be godly. Is that not cause enough?

You are the leader, Gaise. Men always tend to agree with the leader. It is the nature of things."
"This is not a game, Father."
"Of course it is: the oldest game in the world. You have proved yourself in battle, leading men in cavalry charges. This game is different. This game is unlikely to be won by a single heroic charge. This will be like the wolf pack hunting the stag. This will be about planning, movement, wearing down the enemy, bringing him to bay at exactly the point where he is at his weakest. This will be about subtlety and deception. Winter Kay is an excellent strategist. He thinks he is the wolf. He is right. We are the stag. To win you must make him the stag.

One day you'll find a love, and then we can talk on equal terms. I do not mean that to sound patronizing. You are bright and intelligent. You have courage and wit. But sometimes, it is like trying to describe colors to a blind man. Love, as I hope you will find, has great power. Even death cannot destroy it. And I still love her.