As far as I can see the only thing that matters is the ones listed as positive or negative for your specific paladin. The taltent "untroubled faith" removes the effect of the ones from the negative selections. The ones that are not listed seems to not matter. I am currently level 5 and have the following levels:
Clever 1
Stoic 2
Diplomatic 1
Rational 2
Deceptive 1
I am goldpact, and the positive ones are rational and stoic. The negative are passionate and agressive. I have taken all the possible dialouges with stoic and rational. The diplomatic one was the first to increase to rank 1.
From somewhere on the web I found that the "faith and conviction" works in levels. So you need a a total of 1, 4, 6, something (cant recall the excact levels) in total to have a different modifier.
But from my memory it has been increasing linearly along with the points in reputation. So currently my faith&con gives:
+9 def, +18 rest. ( this would be based on a total of level 4: 2 stoic, and 2 rational)