The first step on the way to the heart of the Trinitarian mystery is to recognize that as Christians we find ourselves already deeply involved in the triune life and need only to reflect rightly on that present reality. Most evangelical Christians don’t need to be talked into the Trinitarian theory; they need to be shown that they are immersed in the Trinitarian reality. We need to see and feel that we are surrounded by the Trinity, compassed about on all sides by the presence and work of the Father, the Son, and the Holy Spirit. From that starting point, truly productive teaching can begin. 

   There is certainly a time and place for introducing the words, concepts, propositions, and truth claims of Trinitarian theology. But too often in contemporary teaching about the Trinity, those words not only come first; they come first, last, and exclusively. The Trinity seems to most evangelicals like a doctrinal formula to be received and believed by a mental act of understanding. In short, it is at best a true fact about God that we hold in our minds in the form of words. Teaching about it is then a matter of using words to lead learners to more words. “Words, words, words,” was Prince Hamlet’s reply when he was asked what he was reading, but that was hardly a sign of a balanced mind or a generous spirit. A Christian who is reading about the Trinity ought to be able to say he is reading more than “words, words, words.” Evangelical commitment to the Trinity should not stay confined to the realm of verbal exercises; it ought to dive deeper and rise higher than the power of words. It ought to begin from the experienced reality of the Trinitarian grace of God and lead us to a deeper encounter with the Father, the Son, and the Holy Spirit.  

The Deep Things of God - Fred Sanders