How Important is the Doctrine of the Trinity?

This morning as I was preparing for our Wednesday evening study in the 1689 Baptist Confession, I came across this searching and sobering observation regarding the biblical doctrine of the Trinity (our present studies right now are concerning this vital doctrine). The observation comes from Dr. James White, in his book The Forgotten Trinity. There is much here that the church at large needs to weigh in and evalute when we think and talk about God:

"The Trinity is a truth that tests our dedication to the principle that God is smarter than we are. As strange as that may sound, I truly believe that in most instances where a religious group denies the Trinity, the reason can be traced back to the founder's unwillingness to admit the simple reality that God is bigger than we can ever imagine. That is really what Christians have always meant when they use the term "mystery" of the Trinity. The term has never meant that the Trinity is an inherently irrational thing. Instead, it simply means that we realize that God is completely unique in the way He exists, and there are elements of His being that are simply beyond our meager mental capacity to comprehend...When men approach God's truth with a haughty attitude, they often decide that particular elements of that truth are not "suitable" to them, so they "modify" the message of the faith to fit their own notions. Since the Trinity is the highest of God's revelations concerning himself, it is hardly surprising to discover that many groups deny it. If one denies any of the preceding truths upon which the Trinity is based, one will end up rejecting the entire doctrine en toto. An unwillingness to worship God as God is and has revealed himself lies behind every denial of the Trinity that appears down through history. We want a God we can fit in a box, and the eternal, Triune God does not fit that mold."