More than a million young people take part in The International Letter Writing Competition each year. In 2018, the theme of the competition was “Imagine you are a letter traveling through time. What message do you want to convey to your readers?”

In the Bible, we have a collection of letters that — thanks to the inspiration and guidance of the Holy Spirit — have made their way through time to us. As the Christian church grew, Jesus’s disciples wrote to churches across Europe and Asia Minor to help the people understand their new life in Christ; many of those letters…