Paul has set off to tell people about Jesus with 3 friends, Timothy, Silas and Luke.
One night Paul had a vision which was a special message from God. In the vision there was a man from begging Paul to travel to Macedonia and tell people about Jesus. So they set off from Troas and sailed to Neopolis and then on to Philippi in Macedonia.
There was no Synagogue in Macedonia so Paul and his 3 friends went down to the river and met a lady there called Lydia. God opened Lydia’s heart to the things Paul was saying about Jesus and she realised that she needed to follow Him.
As they were by a river, Lydia and other people from her family had become Christians were baptised as a sign of the change that had happened in her heart.