millions who believe in trinity can not explain it-it is a mystry and it makes God unknown.
The teaching makes God unknown. However, God want us to now him.
the Word God, means "divine one"or "deity". It is title which could be applied even to humans. But that does not mean humans are the same with the creator.
english language use G and g to differentiat. Thus Jesus could be called a god as in divine, but that does not mean he is The God or the almity.
He was created but no one created God.