Editing Keystone (architecture) (section)

==Metaphor==
{{see also|cornerstone}}
Keystone is often used metaphorically for an essential part on which the whole depends or as an acme of the whole.

In Christianity, [[Psalms]] 118:22,<ref>{{Bible|Ps|118:22}}</ref> translated in the [[Authorized Version]] as "The stone which the builders refused is become the head stone of the corner", is taken to refer to Jesus.

The [[List of states and territories of the United States|U.S. state]] of [[Pennsylvania]] calls itself the "Keystone State", because during early American history, it held a crucial central position among the [[Thirteen Colonies]] geographically, economically, and politically, like the keystone in an arch.<ref>{{cite web |title=State Symbols |url=https://www.pa.gov/guides/state-symbols |website=PA.gov |publisher=Commonwealth of Pennsylvania |access-date=12 January 2024}}</ref> A keystone is a symbol of Pennsylvania, being used in the logos of many Pennsylvania government departments, in Pennsylvania [[Highway shield|state route signs]], and on [[Vehicle registration plates of Pennsylvania|Pennsylvania car license plates]], and the Shoulder Sleeve Insignia of the Pennsylvania National Guard's [[28th Infantry Division (United States)]], a Red Keystone, first adopted during [[World War I]] in October 1918.

Referring to the [[Book of Mormon]], [[Joseph Smith]] said that it "was the most correct of any book on earth, and the keystone of our religion, and a man would get nearer to God by abiding by its precepts, than by any other book."<ref>{{cite book |title=[[History of the Church (book)|History of the Church]]'' Volume 4'' |date=1908 |publisher=[[Deseret News]] |location=[[Salt Lake City]] |page=461 |access-date=12 January 2024 |chapter=Chapter 27 |chapter-url=https://byustudies.byu.edu/online-chapters/volume-4-chapter-27/}}</ref> [[Ezra Taft Benson]], the 13th president of [[the Church of Jesus Christ of Latter-day Saints]], said it "is my prayer that the Book of Mormon may become the keystone of our lives."<ref>{{cite news |title='Keystone of our religion' |url=https://www.thechurchnews.com/2013/8/17/23224107/keystone-of-our-religion |access-date=12 January 2024 |work=[[Church News]] |date=17 August 2013 |language=en}}</ref>