[38] Conversion is scarcely a fit word to apply to the Lord's dealings with Cornelius. He had evidently been converted long before the angelic message and Peter's preaching, else whence his prayers and devotion? The Lord simply made by St. Peter a fuller revelation of His will to a soul longing to know more of God. [39] We should carefully observe, however, that there is a marked difference between the cases of Cornelius and Saul. An angel appeared to Cornelius, Christ Himself to Saul. St. Peter is sent to Cornelius to instruct him in the revelation made by Christ. That revelation was made by Christ Himself to Saul in the vision by the way, during the three days of his blindness, and probably during his stay in Arabia. Ananias was sent to Saul merely to baptize him, and predict his future. "Enter into the city and there it shall be told thee what thou shalt _do_," is our Lord's direction to Saul. St. Paul's knowledge of Christ was neither by man nor through man. His knowledge even about the institution of the sacraments was by immediate revelation: see 1 Cor. xi. 23. Saul after the vision rose up from the earth and was led by the hand into Damascus. He was there three days without sight, wherein he neither did eat nor drink. This period of his life and this terrible experience is regarded by many as the time to which may be traced the weakness of eyesight and the delicate vision under which he ever afterwards suffered. The question has often been raised, What was St. Paul's thorn, or rather stake, in the flesh? Various opinions have been hazarded, but that which seems to me most likely to be true identifies the thorn or stake with severe ophthalmia. Six substantial reasons are brought forward by Archdeacon Farrar in defence of this view. (1) When writing to the Galatians St. Paul implies that his infirmity might well have made him an object of loathing to them; and this is specially the case with ophthalmia in the East (see Gal. iv. 14). (2) This supposition again gives a deeper meaning to the Apostle's words to these same Galatians that they would at the beginning of their Christian career have plucked out their eyes to place them at his service (Gal. iv. 15). (3) The term "a stake in the flesh" is quite appropriate to the disease, which imparts to the eyes the appearance of having been wounded by a sharp splinter. (4) Ophthalmia of that kind might have caused epilepsy. (5) It would explain the words "See with how large letters I have written unto you with mine own hand," as a natural reference to the difficulties the Apostle experienced in writing, and would account for his constant use of amanuenses or secretaries in writing his Epistles, as noted, for instance, in Romans xvi. 22 and implied in 1 Corinthians xvi. 21. (6) Ophthalmia would account for St. Paul's ignorance of the person of the high priest (Acts xxiii. 5).[40] This question has, however, been a