I've been thinking recently that I'd love for a way to tie religion into the Alignment system in my Caliburn setting. The battle between law and chaos in the wake of the King's death is a large setting wide conflict, but on a smaller and more personal scale it is the battle between good and evil that plays a much more important role. Obviously no one, in the real world or a fictional setting, is perfect. We each have our vices and our virtues. To emphasis this fact, and to track each for the PCs, I've made a Temptation Mat.
This is kind of a rough draft of the Seraphist version (A religion that blends of several real world faiths and includes many Judeo-Christian beliefs and values) which pits the Seven Deadly Sins against the Seven Heavenly Virtues on a sliding scale. At the beginning of the game each player will be given thirty five points that they are allowed to assign to one of the seven scales. Since the starting point for each scale is the -5 spot you could either start with a totally blank slate (all Zeros) or you can have some virtues and some vices.
During play the scales with shift depending upon the actions of the character. If a character murdered someone who slighted him his Patience/Wrath would slide a point toward the Wrath side. If a character gave a poor stranded man his horse his Charity/Greed would slide a point toward Charity. Only significant events or a multitude of smaller events would result in a shift.