Thomas Sternhold was a man who lived a long time ago in England, around 500 years ago. He was a poet who wrote songs called Psalms which were based on things written in a big book called the Bible.
Sternhold was very clever and talented with words. He wrote these songs to help people understand the lessons from the Bible and learn how to be good people. The songs were sung in churches all over England, and people loved them.
Even though he lived so long ago, people still sing the songs he wrote today. It's like a really special and important thing that he did, and it's still helping people learn about the Bible and be better people.