How did artist during the Middle Ages use visual to enhance the power of their words?

Well i might get reported for putting this out here buutt why do we all have to bow down to a greater being? yes i accept that there is someone higher that keeps most people going but for me its like something to throw to keep one in their what is the purpose of a religion and why do they always throw that if one dosent obide by the lord he will shun them?

What do the olmec colossal heads represent?

What are possible sources a hair designer might use for inspirations