In Don Quixote, Miguel de Cervantes uses the story of a man who dresses up like a knight to explore "human nature", since the story tracks Don Quixote through the adventures of daily life. <span />
According to Christian faith, God is love. So when we think about God, we don't actually imagine a bearded old man sitting on a cloud watching over us. God doesn't have a form because it is an abstract idea which encompasses beautiful and good feelings such as love, empathy, happiness, caring, compassion, etc. So I guess you could say that in a way, by experiencing such feelings, we are closer to God because God is within all of us.
They started using perspective and this is what gave the illusion of depth in the images
