In the years after Jesus, churches started all over Israel, Greece, Rome, North Africa and many other places.
There were teachers and leaders, called apostles, who helped the churches get started.
They traveled from city to city, visiting churches and writing letters of advice. These letters are published in the Bible.
Here is advice from one of Paul's letters to one of the churches:
1. Rejoice in the Lord always.
Discussion: What would you put in a letter of good advice to churches?
Craft: Make "good advice" cards.