Kevin J. Conner in The Foundations of Christian Doctrine says believers need to know:
- “WHO they believe.
- WHAT they believe, and
- WHY they believe it.”
He further explains that all religions are founded on doctrines and that the “teachings received, believed, obeyed, and continually practiced determine:
- Character—what we are.
- Behavior—what we do.
- Destiny—where we go.
Strong character is determined by strong beliefs, and clearly defined doctrine makes for clear cut convictions.”
photo credit: Fr. Stephen, MSC via photo pin cc
James Poitras 
I love that book.