"Your local gods are poor conversationalists, yes. But you know, I don't hold with the idea of being an unseen, impersonal deity. That's a crutch for gods too weak to appear in all their power and majesty. Think of it; your shrines, your idols, they're not monuments to your glory, they're not reflections of your divinity. They're the bare minimum for any commoner, anyone but the most rarefied philosopher, to have an idea of you to direct their worship towards at all. In fact, careless, absentee gods may find their idols accumulating the worship for themselves!"
The best sales pitches have some sincerity. A lot of sincerity, in fact.