Did most agricultural societies worship saints/prophets/perfect-humans? I don't think so. For example, many Amerindian societies, despite being agriculturalist, worshipped complex deities which were flawed, and/or bore little resemblance to human beings. Take Aztec religion. Even at its most basic, the gods were far from human. At the highest theological levels, the gods appear to be quasi-Lovecraftian entities that appear to blend into and meld with the landscape and each other. Their religion also had components of animism, in the form of Tonalism and Nagualism. If we go back to the Old World, we see that the Greeks, Romans, and older Mesopotamian religions all have flawed gods who are more human than perfect-human. Even then, I suspect that there is a lot of old Egyptian and Roman theological beliefs that were as strange as those of the Aztecs, but have been lost to time.

To be honest, your question says more about how ancient religions get conflated with Christianity than anything else. Christianity, despite its widespread prevalence today, is quite atypical for religions, historically speaking of course. Just because something is important in Christianity does not mean that it was a part of other religions.