There is a story about...
There is a story about a man who was starving for something to eat and was surrounded by small stalls of food stands with lots of food for sale. The man had a $100 bill in his pocket, but no one could make change. So there he stood, starving, in the midst of plenty of food and with plenty of money in his pocket. We are like that man: God is so powerful and so awesome and so holy, and like that $100 bill, we need a way to break it down so we can understand and avail ourselves of God's power. This is why it is important to know God in three forms: Father, Son, and Holy Spirit.