gospel truth
idiomPart ofgospel
gospel truth — idiom
1. Something that is said with absolute certainty, as if it were beyond question.
1.idiom
Definition
Something that is said with absolute certainty, as if it were beyond question.
Example
Noor told us the story as if it were the gospel truth, but we later learned she had invented most of it.
When the mechanic says the car needs a new engine, you cannot assume it is gospel truth.