|Sir_Wulf RPG Superstar 2008 Top 16|
Given your family's preferences, Pathfinder may not be the ideal system for your planned game. I recall a discussion among Christian gamers, who felt that more realistic, down-to-earth rules allowed games to more closely reflect Christian ethics. Pathfinder descends from D&D, a game originally about killing things and taking their stuff. Realistic rules make combat perilous, encouraging less-violent solutions.
If you do want to stay with Pathfinder, you might want to consider Green Ronin's Testament: Roleplaying in the Biblical Era. Written for 3E D&D, it provides rules for setting a game in several Biblical periods. It could easily be adapted to Pathfinder.