The religion of the kingdom of Wedala (if we are allowed to pick names, I choose that one, because I've got a thing going on) would be a cult to the goddess of fertility, Weda (see, that was the thing), who governs over such things as the harvest of crops (such as wheat, because thing), childbirth, and generally things related to idyllic woodland landscapes. People also pray to lesser familial spirits (kinda like in Rome) for things unrelated to Weda's domain, like for example finding lost trinkets. And, as pontifex maximus of Weda, the king or queen of Wedala lead all the harvest festivals and goat sacrifices and such in the capital proper's cathedral.
Some people pray to other pantheons (generally those of the other cities, since they are nearby), and this practice isn't outright forbidden, but they tend to be ostracized by the community at large, since the kingdom's populace is very religious. Essentially, Wedala would be a large, populous kingdom, but with little industry, because God's holy commandment was "drop that hammer and grab a sickle, homo", and full of religious nutjobs.