Whilst I was staying in the country, I received a letter from the American Professor, who had in the meantime changed Halle for Berlin, and who wished me to come to Berlin, where, being near the Court, I should be more likely to obtain an exemption from my military duty; and he mentioned, at the same time, that all the expenses, connected with my staying in Berlin, would be fully covered by the remuneration I should receive for teaching German to himself and two of his friends, for a few hours every week. As I had no more connexion with the university at Halle, my course having been finished for more than six months past, and as I had the prospect of being spiritually benefited through my stay in Berlin, and there was no probability, if I remained at Halle, of obtaining the above-mentioned exemption, I came to the conclusion to go to Berlin.
Two ladies of title traveled with me to Berlin in a hired carriage. As I knew that we should be for two days together, I thought, in my fleshly wisdom, that though I ought to speak to them about the things of God, I should first show them kindness and attention, and that, after having thus opened a way to their hearts, I might fully set before them their state by nature, and point them to the Lamb of God. We went on together most amicably, I making only a few general remarks about divine things. On the second evening, however, when we were near the end of our journey, I felt that it was high time to speak. And no sooner had I begun plainly to do so, than one of them replied, "Oh! Sir, I wish you had spoken sooner about these things, for we have, for a long time, wished to have some one to whom we might open our hearts; but seeing that the ministers whom we know do not live consistently, we have been kept from speaking to them." I now found that they had been under conviction of sin for some time, but did not know the way to obtain peace, even by faith in the Lord Jesus. After this I spoke freely to them during the hour that yet remained. They parted from me under feelings of gratitude and regret that they could hear no more, for they only passed through Berlin. I felt myself greatly reproved, and all I could do was, by a long letter, to seek to make up for my deficiency in ministering to them on the journey. May this circumstance never be forgotten by me, and may it prove a blessing to the believing reader.
My chief concern now was how I might obtain a passport for England, through exemption from military duty. But the more certain brethren tried, though they knew how to set about the matter, and were also persons of rank, the greater difficulty there appeared to be in obtaining my object; so that in the middle of January 1829 it seemed as if I must immediately become a soldier. There was now but one more way untried, and it was at last resorted to. A believing major, who was on good terms with one of the chief generals, proposed that I should actually offer myself for entering the army, and that then I should be examined as to my bodily qualifications, in the hope, that, as I was still in a very weak state of body, I should be found unfit for military service. In that case it would belong to the chief general finally to settle the matter; who, being a godly man himself, on the major's recommendation would, no doubt, hasten the decision, on account of my desire to be a missionary to the Jews. At the same time it stood so, that, if I should be found fit for service, I should have to enter the army immediately.
Thus far the Lord had allowed things to go, to show me, it appears, that all my friends could not procure me a passport till His time was come. But now it was come. The King of kings had intended that I should go to England, because He would bless me there, and make me a blessing, though I was at that time, and am still most unworthy of it; and, therefore, though the King of Prussia had not been pleased to make an exemption in my favour, yet now all was made plain, and that at a time when hope had almost been given up, and when the last means had been resorted to. I was examined, and was declared to be unfit for military service. With a medical certificate to this effect, and a letter of recommendation from the major I went to this chief general, who received me very kindly and who himself wrote instantaneously to a second military physician, likewise to examine me at once. This was done, and it was by him confirmed that I was unfit. Now the chief general himself, as his adjutants happened to be absent, in order to hasten the matter, wrote with his own hands the papers which were needed, and I got a complete dismissal, and that for life, from all military engagements. This was much more than I could have expected. This military gentleman spoke to me in a very kind way, and pointed out certain parts of the Scriptures, which he in particular advised me to bring before the Jews, especially Romans xi.
On considering why the Lord delayed my obtaining this permission, I find that one of the reasons may have been, that I might both be profited myself by my stay in Berlin, and that I also might be instrumental in benefiting others. As to the first, I would mention, that I learned a lesson in Berlin which I did not know before. Whilst I was at Halle, I thought I should much enjoy being among so many christians as there are in Berlin. But when I was there I found, that enjoyment in the Lord does not depend upon the multitude of believers, by whom we are surrounded. As to the second point, perhaps the last day may show, that the Lord had some work for me in Berlin: for, from the time of my coming until I left, I preached three, four, or five times every week in the wards of a poorhouse, which was inhabited by about three hundred aged and infirm people. I also preached once in a church, and likewise visited one of the prisons several times on Lord's days to converse with the prisoners about their souls, where I was locked in by the keeper with the criminals in their cells.
On the whole my time in Berlin was not lost; and I was in a better state of heart than I had been for any length of time before, I was not once overcome by my former outward besetting sins, though I have nothing to boast of even as it regards that period; and were only the sins of those days brought against me, had I not the blood of Jesus to plead, I should be most miserable. But I think it right to mention, for the glory of God, as I have so freely spoken about my falls, that whilst I was more than ever unobserved by others; and whilst I was living in the midst of more gaiety and temptations than ever; and had far more money than at any previous time of my life; I was kept from things of which I had been habitually guilty in my unconverted days!—My health was in a very weak state, almost the whole time whilst I was staying in Berlin, and was in no degree better, till, on the advice of, a believing medical professor, I gave up all medicine.
Having now without any further difficulty obtained my passport, I left Berlin on February 3rd, 1829, for London. The Lord gave me more grace on my way from Berlin than on my way to it; for my mouth was almost immediately opened to my fellow-travelers, and the message of the Gospel seemed to be listened to with interest, particularly by one. On February 5th I arrived at my father's house; it was the place where I had lived as a boy, and the scene of many of my sins, my father having now returned to it after his retirement from office. I came to it with peculiar feelings. These feelings were not excited merely by the fact of my having been seven years absent from it, but arose from the spiritual change I had undergone since I last saw the place; for I had never been at Heimersleben since my father fetched me from thence, which was a few days after my imprisonment at Wolfenbüttel had