He has connected God to human love. In all the sermons we heard as children, I heard that there were three types of love - agape, philos, and eros. Many of us thought this meant three different kinds - Godly love, brotherly love and erotic love. This is what the doctrine of the Trinity does. If we were on a roller coaster, I need to warn you to hold on to your seat.
Lets take the Trinity one step further.
By being created in the image and likeness of God, humankind also possesses a Triune nature. We are created in the form of the Trinity. I don't like hearing it expressed that way for I found it confusing. When you are dealing with consciousness and awareness, you aren't talking about something that can be neatly divided into discrete parts. Therefore the distinction between soul and spirit gets pretty fuzzy at times.