John 1 is a book in the Bible about Jesus. It talks about how Jesus was with God at the beginning of time and how everything was made through Him. It also talks about how Jesus came to Earth and lived among people, but many people didn't understand or accept Him. John 1 tells us that if we believe in Jesus and follow Him, we can become children of God and have eternal life. It's a very important book for Christians to read and learn from.