John 2 is a chapter in a book called the Bible. The Bible is a very old book that people believe was written by special people who had messages from God. John 2 tells a story about a man named Jesus who went to a wedding with his mom and some friends. At the wedding, they ran out of wine, which was a big problem because people really like to drink wine at weddings. Jesus' mother asked him to help, even though Jesus said it wasn't his time to do miracles yet. But, he listened to his mom and told some helpers to fill some water jars with water. Then, he turned the water into wine! This was a really big deal and impressed everyone at the wedding. The story shows how Jesus could do amazing things and how he cared about people and their celebrations.