That which I now considered the best mode of preparation for the public ministry of the Word, no longer adopted from necessity, on account of want of time, but from deep conviction, and from the experience of God's blessing upon it, both as it regards my own enjoyment, the benefit of the saints, and the conversion of sinners, is as follows:--1. I do not presume to know myself what is best for the hearers, and I therefore ask the Lord in the first place, that He would graciously be pleased to teach me on what subject I shall speak, or what portion of His word I shall expound. Now sometimes it happens, that previous to my asking Him, a subject or passage has been in my mind, on which it has appeared well for me to speak. In that case I ask the Lord, whether I should speak on this subject or passage. If, after prayer, I feel persuaded that I should I fix upon it, yet so, that I would desire to leave myself open to the Lord to change it, if He please. Frequently, however, it occurs, that I have no text or subject in my mind, before I give myself to prayer for the sake of ascertaining the Lord's will concerning it. In this case I wait some time on my knees for an answer, trying to listen to the voice of the Spirit to direct me. If then a passage or subject, whilst I am on my knees, or after I have finished praying for a text, is brought to my mind, I again ask the Lord, and that sometimes repeatedly, especially if, humanly speaking, the subject or text should be a peculiar one, whether it be His will that I should speak on such a subject or passage. If after prayer my mind is peaceful about it, I take this to be the text, but still desire to leave myself open to the Lord for direction, should He please to alter it, or should I have been mistaken. Frequently also, in the third place, it happens, that I not only have no text nor subject on my mind previous to my praying for guidance in this matter, but also I do not obtain one after once, or twice, or more times praying about it. I used formerly at times to be much perplexed, when this was the case, but for more than forty-five years it has pleased the Lord, in general at least, to keep me in peace about it. What I do is, to go on with my regular reading of the Scriptures, where I left off the last time, praying (whilst I read) for a text, now and then also laying aside my bible for prayer, till I get one. Thus it has happened, that I have had to read five, ten; yea twenty chapters, before it has pleased the Lord to give me a text: yea, many times I have even had to go to the place of meeting without one, and obtained it perhaps only a few minutes before I was going to speak; but I have never lacked the Lord's assistance at the time of preaching, provided I had earnestly sought it in private. The preacher cannot know the particular state of the various individuals who compose the congregation, nor what they require, but the Lord knows it; and if the preacher renounces his own wisdom, he will be assisted by the Lord; but if he will choose in his own wisdom, then let him not be surprised if he should see little benefit result from his labours.
Before I leave this part of the subject, I would just observe one temptation concerning the choice of a text. We may see a subject to be so very full, that it may strike us it would do for some other occasion. For instance, sometimes a text, brought to one's mind for a week-evening meeting, may appear more suitable for the Lord's day, because then there would be a greater number of hearers present. Now, in the first place, we do not know whether the Lord ever will allow us to preach on another Lord's day; and, in the second place, we know not whether that very subject may not be especially suitable for some or many individuals present just that week-evening. Thus I was once tempted, after I had been a short time at Teignmouth, to reserve a subject, which had been just opened to me, for the next Lord's day. But being able, by the grace of God, to overcome the temptation by the above reasons, and preaching about it at once, it pleased the Lord to bless it to the conversion of a sinner, and that too an individual who meant to come but that once more to the chapel, and to whose case the subject was most remarkably suited.