“Know for a certainty”
Source:
This phrase has its origins in Joshua 23:13 of the King James Version of the Bible
Meaning:
have perfect knowledge, being without doubt or any reservation
Discover the linguistic gems of the KJV in this best-selling book... ►
KJV Sayings
Discover hundreds of well-known phrases, quotations and idioms from the King James Version of the Holy Bible.
Discover the origins of everyday phrases from each book of the Bible in “The Writing on the Wall”, available worldwide as a paperback and e-book.