Have you read the Scott Hahn book "Lord Have Mercy"? He traces the sacrament of confession from its OT roots starting with Adam and Eve. Very compelling reading.
Sounds very good. Thanks for the recommendation.
Have you read his books, The Last Supper and Swear to God.
The Last Supper has to do with the Mass and parallels in the Book of Revelation.
Swear to God has to do with all the Sacraments and the holy oaths that they contain.