Teams are important in God's work. But they need to be led strategically under God's authority. That was Paul's job. Yes, he was an apostle, an evangelist, a pastor and a trainer, but he was also a passionate, dedicated and God-appointed team leader. With Silas, Paul had brought the gospel to Thessalonica; and Timothy had also taught what it meant (perhaps he was left there when Paul and Silas had to flee to Berea).