The terms EXEGESIS and EISEGESIS refer to how we read the Scriptures.
EXEGESIS relies on the original text of a Scriptural passage to determine the
meaning, the critical explanation or interpretation of a text, especially of Scripture. It is considered legitimate interpretaton, which "reads out of the text" what the original author or authors meant to convey,
EISEGESIS uses things other than original context of a passage to determine that passage's meaning.
EISEGESIS can also mean reading into the passage one's own ideas or
interpreting text in such a way as to itroduce one's own presuppositions, agendas or biases into that passage.
EISEGESIS reads into the text what the interpreter wishes to find or think he finds
there. It expresses the reader's own subjective ideas, not the meaning which is in the text.
Eis, meaning "into" originates from the Ancient Greek and EXEGESIS.
For an example, see the video above "Why Was the Veil Torn In Two?"