We as Christians ought to be the first ones to dig deeper to find answers than anyone else. Acts tells us that it was profitable to be a "Berean." The Bereans according to Acts 17:11 says:
"11Now the Bereans were of more noble character than the Thessalonians, for they received the message with great eagerness and examined the Scriptures every day to see if what Paul said was true."
We also are to study the Scriptures to see what is right and true. The Word of God is the basis for all that we believe. If I were to say that the doctrine of Hell is an awful truth, which it is, and I then refuse to believe it, when I look at the Scriptures and I see the doctrine of Hell what will I do? My beliefs must bend to fit the Word not the other way around.
The Doctrine of the Trinity is one of the hardest doctrines to study in the Bible. It does not fit anything that we have ever heard. It is also something that we cannot completely reason out. That is why the Trinity is especially vulnerable to heresy. It is also why in the early centuries of the Church the doctrine was hammered out, fought about, and the early creeds centered on it. The Nicene, The Apostles, and The Athanasian Creeds played a big part in trying to make the doctrine clear to the rest of the Church and to it's posterity. Orthodoxy was born on the backs of Augustine, Athanasius, and St. Gregory. The early church fathers stood their ground and were willing to give their lives for this doctrine. Why? Why is it so important not to believe that, as The Shack spells out, that God the Father died on the cross with God the Son? Why is it so important that God is a Father in the Bible not a woman? These things and others in the novel are important and they are important not to believe them. They have far reaching implications for our orthodox faith. This is why Augustine wrote his great treatise, De Trinitate, to spell out the implications of the Trinity and to help us guard against heresy. His opening paragraph states: