Second Book of Paralipomenon (Author Compiled by Isaias and Esdras from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
30:22et locutus est Ezechias ad cor omnium Levitarum qui habebant intellegentiam bonam super Domino et comederunt septem diebus sollemnitatis immolantes victimas pacificorum et laudantes Dominum Deum patrum suorum
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.