This word seems to have been introduced by the use of the Latin credo, "I believe".
...That which is believed; any system of principles which are believed or professed; as a political creed.
A creed is more than a church's standard. It is personal, "I believe". It has vast implications on one's life in every sphere of life. It's declaration spans history, ethics, morals, politics, and all laws. When there is no declarative creed there is no direction in life and there is no justice.