"Hath on good authority" is an idiomatic phrase that originated from Old English and is primarily derived from the verb "have" in its archaic form, meaning "to possess" or "to hold." When combined with the phrase "on good authority," the expression implies that the information or knowledge being conveyed is based on a reliable or trustworthy source.
This phrase is commonly used to assert that a statement or claim being made is grounded in credible evidence or firsthand experience. When someone says they "hath on good authority," they are suggesting that what they are about to communicate is not mere speculation or hearsay but rather has been obtained from a dependable and well-informed source.
The phrase is often employed to lend credibility or weight to an assertion, indicating that the claim being made is not to be contested or doubted. It typically indicates that the information being presented is verified, well-researched, and backed by reliable sources or experts in the field.
In a broader sense, "hath on good authority" can be seen as a symbol of reliability and trustworthiness. It underscores the importance of relying on sound evidence or reputable sources when seeking knowledge or making claims. By using this phrase, individuals aim to demonstrate the credibility and legitimacy of the information they are sharing.