"... What is the origin or inspiration in 1 Corinthians 6:8, the central injunction of Paul's parenesis against going to prostitutes? Two answers to this question have been suggested. Whereas F. Godet and F. F. Bruce claim that the command may recall Joseph's literal fleeing from Potiphar's wife, the margin of Nestle-Aland notes the parallel of the Testament of Reuben 5:5. This short study investigates these two proposals and suggests that they may in fact both be right. The question of whether Paul quoted from non-canonical Jewish literature has long been debated. R. H. Charles's Apocrypha and Pseudepigrapha of the Old Testament (Oxford, 1913) claims that Pauline parallels can be found in Tobit (1. 199), Wisdom (1. 526 f), Enoch (2. 163 f), Letter of Aristeas (2. 92), 4 Ezra (2. 559) and especially the Testaments of the Twelve Patriarchs (2. 292), a document he claims was Paul's vade mecum. However, E. E. Ellis and others are skeptical of such parallels, and claim that only similar phraseology is represented ('Paul's use of non-canonical Jewish literature is very doubtful at best in no case has a direct use of writings of the diaspora been established'). The relation of 1 Corinthians 6:18 to the Testament of Reuben 5:5 is largely ignored in this debate, and by commentators on 1 Corinthians. Apparently the repetition of a mere three words has not impressed scholars, who, if aware of the parallel, usually put them down to coincidence. Hans Conzelmann rightly calls 'a characteristic catchword in parenesis', and there is certainly nothing distinctive about the term for sexual immorality in question ..."