If you could travel back to the early days of the Church, would you recognize it? Would the Mass seem familiar? Could you go to confession? In Roots of the Faith, Mike Aquilina makes it clear that, as far as the essentials are concerned, that time-travel trip would reveal a Church familiar to Catholics today. Just as an acorn grows into a tree and yet remains the same plant, so the Catholic Church is a living organism that has grown from the faith of the earliest Christians into the Body of Christ we know today.