In this pericope Paul expressed his sincere desire to return to Thessalonica. He did so to help his readers appreciate how much they meant to him to encourage them to reject any suggestion that his interest in them was selfish.
2:17-18 Paul and his companions had to leave Thessalonica prematurely, and for Paul the separation was an especially sorrowful one. He compared it to being bereft (lit. orphaned). He felt torn from his spiritual children. However even though absent in body his readers were very present in his affections. Moreover Paul eagerly anticipated the opportunity to return to Thessalonica to see them again. He had attempted such a visit more than once, but Satan, the adversary who had interfered and had made the apostle's ministry in person impossible for the present, had hindered him.
". . . Paul . . . found his unbounded capacity for paternal affection amply employed in his relationship with his converts."55
In Acts 16:6-7 Luke wrote that the Holy Spirit forbade Paul to preach in Asia and Bithynia. Here Paul said that Satan thwarted his efforts to return to Thessalonica. How can we tell if Satan is opposing us or if the Spirit is directing us? It seems to me that the New Testament writers viewed God's sovereign control of all things on different levels at different times. Sometimes, as in Acts, they spoke of the One who is in ultimate charge and focused on His direction. At other times, as here, they spoke of the instruments that God uses. God permitted Satan to oppose Paul's return to Thessalonica, but this was all part of God's sovereign will. In Acts the emphasis is on the One responsible for the expansion of the church, but here the emphasis is on the instrument God used in this situation. Satan can only oppose us as God gives him permission to do so (Job 1-2).56
2:19-20 Paul's words for his converts here are especially affectionate. His love for the Thessalonians was unusually strong. Their development was what he hoped for, their glorification was what he rejoiced in, and their ultimate victory would be a crown of glory for him. Paul was talking like a father again (cf. v. 11). Looking at the end of his ministry Paul said he would take the greatest pride in those believers.
"The future event Paul is looking toward is identical with the appearance of every Christian before the bema(judgment seat') of Christ (2 Cor. 5:10), where the works of every Christian will be evaluated. Because of his converts' evident spiritual attainments, Paul feels that this will be an occasion of joy and victory."57
"Parousia["coming"] comes from two words: to be' and present.' It may point to the moment of arrival to initiate a visit or it may focus on the stay initiated by the arrival. In the NT the word applies to the return of Jesus Christ. The various facets of this future visit are defined by the contexts in which parousiaappears. In this instance it is Jesus' examination of his servants subsequent to his coming for them (4:15-17) that is in view."58
". . . the formerly pagan Thessalonians probably understood the parousia of Christ in terms of the visits of the imperial rulers of Rome. These rulers were increasingly being thought of as the manifestations of deities who required elaborate ceremonies and honors when they visited the various cities of the Empire."59
Note that Paul fully expected his ministry to end with the return of Christ rather than by his own death (v. 19). This is one of many evidences that Paul and the other early Christians believed in the imminent return of Christ. Nothing had to occur before His return. This perspective strongly suggests that Paul believed in the pretribulational rapture of the church.
How could Christ's return at the Rapture be imminent in view of the Lord's statement that Peter would grow old (John 21:18) and His promise to Paul that he would visit Rome (Acts 23:11)? Concerning God's promise to Peter, "when you grow old"(John 21:18) is a very general description of what lay ahead for Peter. Peter could have undergone confinement and died at any time after Christ's ascension and one could say he had grown old. About the promise Paul received, the assumed condition of its fulfillment was probably if the Lord did not return before then. This would have been true for what Jesus prophesied concerning Peter's death as well. We often speak this way today. We say something will happen, but we mean unless the Lord comes first.
3:1-2 Paul returned to the report of his plans (2:17-18). He explained that by the time he, Silas, and Timothy had reached Athens they felt they could not stay away from their young converts in Thessalonica any longer. They decided that Timothy should return. Silas evidently went back to Philippi and or Berea (Acts 18:5). Paul may have described Timothy as he did here to give this young brother more stature in the eyes of the Thessalonians. Timothy's mission was to strengthen and encourage the new Christians in their faith so the persecution they were experiencing would not discourage them excessively.
Paul may have chosen to send Timothy rather than to return personally for any number of reasons. Timothy was the junior member of the missionary team, and Paul and Silvanus were the senior members. Timothy had a Greek father and probably looked Greek. He would, therefore, have attracted no special interest in a Greek city whereas Paul was immediately recognizable as a Jew (cf. Acts 16:20).60
3:3-5 Often new believers, and even older believers, interpret difficulty as a sign that they need to change something. Timothy reminded them that persecution is a normal experience for the Christian (cf. Matt. 5:11-12; 10:16-28; 20:22-23; 24:9-10; et al.), just as Paul had previously instructed them. Had the Thessalonians fallen before this temptation they would have been in danger of becoming like rocky soil in which the seed of the gospel does not root firmly. Thus the ministry expended on them would have been in vain in the sense that it would not have resulted in substantial growth and fruit.
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