If Paul did not write the Epistle to the Hebrews, who did write it? Prodigious labor has been expended upon this question, but with very little result. In ancient times, Barnabas, Luke and Clement of Rome, were each regarded as the author. Of these three views the first is most probable; the second is exceedingly unlikely; and the last is clearly impossible. Whoever wrote the epistle, Clement certainly did not. The letter which we possess from his pen is immeasurably inferior to the apostolic writings to which Hebrews certainly belongs. Clement was a humble reader of Hebrews, not the author of it. Luther was inclined to regard Apollos as the possible author of Hebrews; and of all the many suggestions that have been made, this is perhaps the best. Undoubtedly the circumstances and training of Apollos were in a number of respects like those which might naturally be attributed to the author of the epistle. Apollos was closely associated with Paul, and perhaps at a later time with others of the apostles, just as might be expected of the author of an apostolic work such as Hebrews. On the other hand, like the author of the epistle, he was not an eyewitness of the life of Jesus. Compare Heb. 2:4. Like the author of the epistle he was no doubt acquainted with Timothy. Compare ch. 13:23. He was an "eloquent" or "learned" man, Acts 18:24, who might well have produced the splendid rhetoric of the epistle. He was a Jew and mighty in the Scriptures, as was also the author of Hebrews. He was a native of Alexandria, the university city of the period, and the seat of a large Jewish community, where just that combination of Greek rhetorical training with Scriptural knowledge which is exhibited in the epistle is most naturally to be sought.
These indications, however, can merely show that Apollos might conceivably have written the epistle; they do not show that he did write it. The authorship of this powerful work will always remain uncertain. How little we know, after all, of the abounding life of the apostolic Church!
In the Student's Text Book, it has been shown that the readers of the epistle were probably members of some rather narrowly circumscribed community. Where this community was is by no means clear. The one indication of place which the epistle contains is ambiguous. In ch. 13:24 it is said, "They of Italy salute you." These words may mean that the author is in Italy and sends greetings from the Christians of that country, or they may mean that the author is outside of Italy and sends greetings from Italian Christians who happened to be with him. In the latter case, probably the readers were in Italy; for otherwise they would have no special interest in the Italian Christians. All that we can say is then that the epistle was probably written either from Italy or to Italy. If it was written from Italy, then since the readers were Jews, it is natural to seek them in Palestine. The Palestinian Christians were "Hebrews" in the narrower, linguistic sense of the word, as well as in the broader, national sense. The ancient heading of the epistle thus comes to its full rights. On the other hand the Palestinian hypothesis faces some rather grave difficulties. If the readers are to be sought in Italy, then perhaps they formed a Jewish Christian community in Rome or in some other Italian city. The question cannot be settled with any certainty. The destination of the epistle is an even greater riddle than the authorship.