"...every Christian is a theologian..." (Bruce Milne)
"By virtue of being born again we have all begun to know God and therefore have a certain understanding of His nature and actions. That is, we all have a theology of sorts, whether or not we have ever sat down and pieced it together. So, properly understood, theology is not for a few religious eggheads with a flair for abstract debate - it is everybody's business. Once we have grasped this, our duty is to become the best theologians we can to the glory of God, as our understanding of God and His ways is clarified and deepened through studying the book He has given for that very purpose, the Bible." 1
The principle to grasp today is this - biblical theology or doctrine serves as the foundation and fundamental framework for everyday practical Christian living. So, let's get "jiggy" with it!
1 Bruce Milne, Know the Truth: A Handbook of Christian Belief (Downers Grove, IL: Intervarsity, 1982), p.11