"Gods do most of their work among mortals by empowering mortal followers, mostly clerics like myself but also if they are Lawful Good, Neutral Good, or Lawful Neutral, sometimes paladins. Iomedae in particular selects more paladins than clerics. They can also grant visions, adjust which spells they give their empowered servants instead of granting the specific ones we request, and perform ad-hoc miracles, but all things they can do which impinge upon the mortal world - as opposed to for example merely affecting their own domains in the Outer Planes, which are among other things afterlives for the mortals of the corresponding alignments - are 'expensive', not in currency but in a sort of treaty-limited budget. This is presumably a massive oversimplification because gods are complex and the details are not worth communicating.
"Gods can be communicated to through prayer, speaking or thinking in a manner that addresses them. This normally has no concrete effects at all because those effects would be interventions and therefore expensive. Communication from gods most paradigmatically takes the form of the spell Commune, which I am not powerful enough to cast, answering yes-or-no questions with some mild deviation from the format possible in extreme situations, but I surmise based on the fact that my" not superiors, he isn't qualified for such a luxury, "seniors in the Church told me not to cast it even if I could that it is itself costly for the communed god.
"I have two copies of Iomedae's holy book in my backpack. The language I gave you by spell is modern Chelish and the book is written in archaic, and also poetic, Taldane, but it may be moderately comprehensible to you now and I can aim for the correct dialect with my next casting if that is desirable. I have only read it all the way through once and had intended to meet a catechism instructor at the end of my interrupted journey. On Golarion there are many evils threatening people's well-being such as demons, the undead, unnecessary warfare, the forces of Hell," like him a few months ago, "and things like pirates, orc raids, and banditry, but I don't know what forms it may take here. The advice I had from the Church was to remain at my Worldwound post, which at first I did, but then my country was having a constitutional convention and wanted clerical representation, so my intention then was to attempt to vote with the Church at the convention in the hopes of steering the governance of the country in a more Lawful Good direction."