The term ‘extra-Biblical’ can refer to two things:
- Information or content outside the Bible. Thus, any form of knowledge or experience which gives us information concerning God, His Work or His Will, which is not directly quoted in scripture.
- Teachings, concepts and practices claimed to be supported by or taught in the Bible, but which are based on incorrect interpretation. In hermeneutics, the study of the methodological principles of interpretation, this is known as “eisogesis” (super-imposing a meaning onto the text), as opposed to “exegesis” (drawing the meaning out of the text).
Examples are found in Scripture Twisting Methods of the Cults
Note that extra-Biblical teachings — in the second sense of the term — can also occur inadvertently.