Immediately, therefore, after his conversion he went away, he tells us, into Arabia. He does not, indeed, say for what purpose he went; but, as there is no record of his preaching in that region and this statement occurs in the midst of a vehement defense of the originality of his gospel, we may conclude with considerable certainty that he went into retirement for the purpose of grasping in thought the details and the bearings of the revelation he had been put in possession of. In lonely contemplation he worked them out; and, when he returned to mankind, he was in possession of that view of Christianity which was peculiar to himself and formed the burden of his preaching during the subsequent years. 52. There is some doubt as to the precise place of his retirement, because Arabia is a word of vague and variable significance. But most probably it denotes the Arabia of the Wanderings, the principal feature of which was Mount Sinai. This was a spot hallowed by great memories and by the presence of other great men of revelation. Here Moses had seen the burning bush and communed with God on the top of the mountain. Here Elijah had roamed in his season of despair and drunk anew at the wells of inspiration. What place could be more appropriate for the meditations of this successor of these men of God? In the valleys where the manna fell and under the shadows of the peaks which had burned beneath the feet of Jehovah he pondered the problem of his life. It is a great example. Originality in the preaching of the truth depends on the solitary intuition of it. Paul enjoyed the special inspiration of the Holy Ghost; but this did not render the concentrated activity of his own thinking unnecessary but only lent it peculiar intensity; and the clearness and certainty of his gospel were due to these months of sequestered thought. His retirement may have lasted a year or more; for between his conversion and his final departure from Damascus, to which he returned from Arabia, three years intervened; and one of them at least was spent in this way. 53. We have no detailed record of what the outlines of his gospel were till a period long subsequent to this; but, as these, when first they are traceable, are a mere cast of the features of his conversion, and, as his mind was working so long and powerfully on the interpretation of that event at this period, there can be no doubt that the gospel sketched in the Epistles to the Romans and the Galatians was substantially the same as he preached from the first; and we are safe in inferring from these writings our account of his Arabian meditations.