After bearing their testimony to the word of the Lord and preaching it, the apostles went back to Jerusalem, preaching the gospel to a number of the Samaritan villages;
By the hand of Silvanus, a faithful brother (in my opinion), I have written you these few lines of encouragement, to testify that this is what the true grace of God means. Stand in that grace.
So they fixed a day and came to him at his quarters in large numbers. From morning to evening he explained the Reign of God to them from personal testimony, and tried to convince them about Jesus from the law of Moses and the prophets.
By the time Silas and Timotheus came south from Macedonia, Paul was engrossed in this preaching of the word, arguing to the Jews that the messiah was Jesus.
You will receive power when the holy Spirit comes upon you, and you will be my witnesses at Jerusalem, throughout all Judaea and Samaria, and to the end of the earth."