Jacob's blessing of his youngest son Benjamin (Gen 49.27) was widely understood in the early Church as a prophecy of that most (in)famous Benjaminite, the apostle Paul. This exegesis enjoyed enduring popularity and can be traced to every corner of the Roman world. It is also early: it was already well established by the time of its earliest surviving witnesses at the end of the second century. But if it predates the late second century, when did it originate? While we can only speculate, this paper offers reasons for supposing that this exegesis may reach back into the first century.