I've been playing Pathfinder with friends for about a year and a half now, and I tell other friends that haven't played D&D how much I enjoy it. I piqued their interest in the game and offered to DM for them.
I have two new players that are engaging in my NPCs and combat very well! However, I have a player who's playing a Cleric, and tells me that killing people is against his religion, which I understand but, he has spells do damage to people and he requested a weapon.
Problem
I prompted to my players an organization that will help them get around my homebrew world easier and allow them to easily get quests, like bounty hunting, dungeoneering, city protection, etc. It would also allow me to easily generate story, but my players just aren't interested. The cleric isn't interested because he fears the organization's bounty hunting will go against his character's religion. I'm afraid that my player's religious background is going to affect future ideas of mine, and I'm not sure how to work around it.
How do I work around players whose backstory goes against the story?
Background
My prep for the game was mostly the mechanics of the game, how to roll dice and make a character and create a proper character sheet. I went over the backstories with my players a week before we started. My other player, a monk, said he had no backstory and that I could work with whatever. He isn't a huge issue. The cleric explained his backstory and why he became a cleric, but didn't clarify he would be a pacifist.