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.
I think it is D: the spread of the Roman Catholic Church.
Null- having no legal or binding force