The Urantia Book Study Edition
The Urantia Book Study Edition
Urantia Book 121:7.5 links to Old Testament References (KJV):

New spirit, live in men's hearts: Jl 2:28, Ek 36:26, Ek 18:31, Ek 11:19

Create clean heart, new spirit: Ps 51:10

Law written in men's hearts: Je 32:40, Je 31:33