St. Barnabas 34. The Letter of Barnabas. Letter of Barnabas We have from the Early Church a treatise called The Letter of Barnabas . The early Church was unanimous in believing this was authored by St. Barnabas himself, but modern scholarship does not believe Barnabas was the author. It appears to have been written between about 70-130 AD. The text has always been respected, sometimes treated as canonical Scripture and read at Mass (before the canon was defined). It is still read today in the Church’s Liturgy of the Hours , Office of Readings. The letter begins: “All hail, you sons and daughters, in the name of our Lord Jesus Christ, who loved us in peace. Seeing that the divine fruits of righteousness abound among you, I rejoice exceedingly and above measure in your happy and honored spirits, because you have with such effect received the engrafted spiritual gift. Wherefore also I inwardly rejoice the more, hoping to be saved, because I truly perceive in you the Spirit poured fort...