Solution from the walkthrough:
The code in the first area is 2-5-6-4. You get it by counting the things shown on stone plates hanging higher, not directly above the ground. A hint about the god is given saying „In his opinion only those who were above others had any worth.“, which is supposed to tell you which plates are correct and which to ignore.
In the worst case, if you can't solve a riddle, you can use the item "Riddle Key" to skip it. There are a few hidden around the world, but only a limited amount, so don't use them if you don't really need to.