3:1 "Finally"introduces the last major section of the epistle. As was so often his custom, Paul first exhorted his readers to pray (1 Tim. 2:1-2; cf. 1 Thess. 5:25; et al.). He realized that God will work in response to the requests of His people. To fail to pray is to fail to receive God's blessings (James 4:2). Specifically Paul asked the Thessalonians to ask God to facilitate the rapid and wide dissemination of the gospel and thus glorify His Word. Paul's readers had seen God do this in their midst when Paul and his fellow missionaries first visited their city.
3:2 Also Paul desired that God would grant him and his colleagues deliverance from unreasonable and harmful unbelievers who sought to limit the spread of the gospel. This is the negative side of the former positive request. To oppose the spread of the gospel is unreasonable behavior since the gospel brings spiritual life to those who are dead in sin. These men were probably unbelieving Jews who were opposing Paul in Corinth (cf. Acts 18:5-6, 12-13).
