Here is an excerpt:
Systematic theology is based on certain assumptions. The first assumption is that God has revealed Himself not only in nature but also through the writings of the prophets and the Apostles, and that the Bible is the Word of God. It is theology par excellence. It is the full logos of the theos.Order your copy here.
The second assumption is that when God reveals Himself, He does so according to His own character and nature. Scripture Tells us that God created an orderly cosmos. He is not the author of confusion because He is never confused. He thinks clearly and speaks in an intelligible way that is meant to be understood.
A third assumption is that God's revelation in Scripture manifests those qualities. There is a unity to the Word of God despite the diversity of its authors. The Word of God was written over many centuries by many authors, and it covers a variety of topics, but within that diversity is unity. All the information found in Scripture--future things, the atonement, the incarnation, the judgement of God, the mercy of God, the wrath of God--have their unity in God Himself, so that when God speaks and reveals Himself, there is a unity in that content, a coherence.
God's revelation is also consistent. It has been said that consistency is the hobgoblin of little minds, but if that were true, we would have to say that God has a small mind, because in His being and character, He is utterly consistent. He is the same Yesterday, today, and forever (Heb. 13:8).