Nain is a very old town in Israel where people have been living for a very long time. It's named after a Hebrew word that means "pleasant" or "delightful". In this town, there was a story in the Bible about a man named Jesus who brought a woman's son back to life.
You know how you like to play with your toys and sometimes they break? Well, sometimes people get sick or injured and it can be really bad. In this story, the woman's son had died and she was very sad because she loved him very much.
But then Jesus came to where the woman and her son were and he touched the boy and the boy woke up and was alive again! It was like a miracle because nobody thought it was possible. The people in the town were amazed and they all knew that Jesus must be special and have special powers.
So, Nain is a special place because of this story and people still go there to visit and remember what happened. It's important because it shows that even when things seem impossible, sometimes there can be a miracle and things can turn out okay in the end.