Its actually quite common to create paladins for specific deities. They are often defenders of the faith though traditionally there are some deities that are more likely to have large numbers of Paladins like Tyr, but that doesn't exclude others if they feel the call of that deity and the path of being a paladin
I'm afraid you misunderstood me. My point was that it's unrealistic to ask the devs to make us different paladin classes for each of the gods.
