The Liberty Bell's inscription cites Leviticus, specifically chapter 25, verse 10.
The quotation reads, in part, “Proclaim LIBERTY Throughout all the Land unto all the Inhabitants thereof.” It comes from the King James Bible's rendering of the Jubilee instruction in Leviticus.
The Pennsylvania Assembly ordered the bell in 1751 for the State House in Philadelphia. It was cast in London and recast in Philadelphia after cracking during an early test. The famous crack developed later, and the bell was retired from regular service in the nineteenth century.
The bell was not originally called the Liberty Bell. That name became widely popular during the nineteenth century, especially as abolitionists adopted the inscription as a symbol. Today it is displayed at the Liberty Bell Center in Philadelphia.