I. The tokens in the preacher that his hearers are elect: "Our gospel came not unto you in word only, but in power, and in the Holy Ghost, and in much assurance." That was the consciousness of the preachers themselves, but they could appeal to those who had heard them: "even as ye know what manner of men we showed ourselves toward you for your sake." The self-consciousness of the preacher, we see from these words, is a legitimate though a perilous study. Every one has been told that there is no relation whatever between his own consciousness when preaching, and the effect of what is preached; but has anybody ever quite believed this? If there were no relation whatever between the preacher's consciousness and his conscience; if he did not know that many a time neglect of prayer or duty had separated him from God, and made him useless as an evangelist, it would be easier to believe it; but as our life is, the preacher may know quite well that it is no proof of God's good will to men that _he_ is sent to preach to them; or, on the other hand, he may have a humble but sure trust that when he stands up to speak, God is with him for good to his hearers. Thus it was with Paul at Thessalonica. The heartiness with which he speaks here justifies the inference that he had had experiences of an opposite and disappointing kind. Twice in Asia (Acts xvi. 6 f.) he had been forbidden by the Spirit to preach at all; he could not argue that the people so passed by were specially favoured of God. Often, especially in his intercourse with the Jews, he must have spoken, like Isaiah, with the depressing consciousness that it was all in vain; that the sole issue would be to blind their eyes and harden their hearts and seal them up in impenitence. In Corinth, just before writing this letter, he had come forward with unusual trepidation--in weakness and fear and much trembling; and though there also the Holy Spirit and a divine power brought home the gospel to men's hearts, he seems to have been so far from that inward assurance which he enjoyed at Thessalonica, that the Lord appeared to him in a vision by night to reveal the existence of an election of grace even in Corinth. "Fear not: I have much people in this city." In Thessalonica he had no such sinking of heart. He came thither, as he hoped to go to Rome, in the fulness of the blessing of Christ (Rom. xv. 29). He knew in himself that God had given it to him to be a true minister of His grace; he was full of power by the Spirit of the Lord. That is why he says so confidently, "Knowing your election."