Oh, I thought we were just talking in general, non-edition-specific. I started with 2E, so I can't really speak on behalf of 1E.Can you please cite this? Where is this found in the rules? What divine powers? We're talking about a 1e paladin. He's not tied to a god. He only has to be Lawful Good. The idea that the knowledge is granted to me in a flash of divine insight is a post hoc rationalization and it is no different than, "Hey, I didn't notice this boxes over there." It's identical.
However the paladin gets a warhorse, it is similar to the existence of boxes in a particular location, in that it would have been established by the DM before the game starts (or at the very least, long before it would be relevant), with zero input by the players.