That book, sir, is the rock on which our republic rests.
– Andrew Jackson (1767-1845), president of the United States
Source: Halley’s Bible Handbook, first published by Henry Hampton Halley in 1924 as a 16-page pamphlet, it has been expanded and re-published in many editions over the years. These quotes are taken from Halley’s Bible Handbook with the New International Version—Deluxe Edition, 2007, page 24.
For a longer list of quotes like this, see Historic Quotes About the Bible.