Acts 18:7
And he departed thence, and entered into a certain man’s house, named Justus, one that worshipped God, whose house joined hard to the synagogue. And he departed thence, and entered into a certain man’s house, named Justus, one that worshipped God, whose house joined hard to the synagogue.
This verse belongs to the beginning of Paul's work in Corinth, a city given over to idolatry and known for immorality. It was an important commercial city where people from many lands gathered, and the verse places his ministry there. At this time he was living with Aquila and Priscilla, Jews who had settled in Corinth and afterward became distinguished as earnest workers for Christ, having come to live with them after becoming acquainted with their character. After the Jews opposed his teaching about Jesus and he said he would turn to the Gentiles, he left the synagogue and entered the house of Justus, a worshiper of God whose house stood next to the synagogue. Following that move, he with Silas and Timothy labored among the Gentiles.
In Corinth he labored for a year and six months and raised up a flourishing church composed of Jews and Gentiles. By raising up that church he proved the divine character of his mission. The Gentile converts were more numerous than the Jewish converts, and many were truly converted, brought from the darkness of error into the light of the gospel. They were in a more favorable condition than the Jews to receive the truth, for they were not walled in by the maxims and traditions of priests and elders.
His ministry shows that workers today are to carry the gospel beyond their own churches and into the wider world. They are to branch out from place to place preaching the truth to those in the darkness of error rather than working for the churches only. They are to make the world their field of labor rather than working for the churches only.