By whom more probably than by Apollos? 4. St. Mark's connection with Alexandria rests on no scriptural evidence, yet it is credited.5. That of Apollos is narrated in Scripture, and I can conceive of nothing so probable as that, remembering his own instruction by Aquila and Priscilla (Acts xviii.26), he should have founded catechetical schools for others.6. All this is conjectural, indeed, but it agrees with known facts.7. The silence of Clement and the rest is an objection quite as fatal to the claims of St. Mark.8. The unanimity of the Alexandrians, from Pantænus downward, in assigning to St. Paul the authorship of the Epistle to the Hebrews, while it was so much debated elsewhere, suggests that they had early evidence on this point.9. Clement's testimony about St. Luke convinces me that Apollos had no claim to it, but had testified to the Alexandrians that the Apostle was the author, and St. Luke his inspired amanuensis by whom the words were not servilely taken down, but reported in idioms of his own: whether out of St. Paul's "Hebrew" or not, is another question.10. Apollos disappears from history about a.d.64, on his way homeward,  bearing the Epistle to Titus, and (who can doubt?) a copy of that to the Hebrews, written the previous year. All these facts agree with my conjectures that Apollos closed his labours in his native city.
 See vol. ii. p. 342, Elucidation II., this series. Note also, in the same volume, what is said, pp. 166-167.  Lewin, St. Paul, vol. ii. p. 340.
 Lewin, St. Paul, vol. ii. p. 340.