The Bible is the subject of countless head-scratching mysteries. For centuries, religious and secular scholars alike have tried to uncover who wrote the holy text — and when it was written.

The Bible needs a visible, external authority guided by the Holy Spirit to define both the OT and NT Canons. This authority is the Magisterium of the Catholic Church.

Pastor Jack Hills of Orange County, California, explains Bible verse John 14:26-27, and says Jesus told his followers the Holy Spirit will teach all things and be a remembrance of him.

The Holy Bible: English Standard Version Catholic Edition. ... Holy Week: From the Entrance Into Jerusalem to the Resurrection, San Francisco: Ignatius Press, 2011, pp. 231–2.