There are a number of important principles that are very helpful for a Christian to know about, and can mean the difference between being confused and having a good understanding of subjects and doctrines in the Bible.
List of General Guiding Biblical Principles
PRINCIPLES THAT UNLOCK UNDERSTANDING
God uses more than one physical type to depict the one spiritual event
God typifies the Spirit being reality at two lower levels
God uses the one physical type to picture realities at two higher levels
God calls things that are NOT as though they were ALREADY