FFS (Formation, Follow-up, Service)
One of the steps of being a Hard as Nails missionary is FFS (Formation, Follow-Up, and Service). Just like all four of the other steps, it is essential to being a missionary.
City of God Book Review
For the same reasons the Christians read The City of God 1500 years ago, we can read The City of God today. We must, then, review The City of God under the principle by which it was written.