I asked a person why he believes Jesus is God and he said John 1:1 says Jesus was God.
Oh. That was written 65 years after Jesus died. If the reason people believe that Jesus was God is that, what did they believe during those prior 65 years?
Nowhere in Acts is there any trinity or that Jesus was God taught. The opposite. Stephen said that Jesus was at the right hand of God. Two people with a distinct rank and separation.
Why do people care what John 1:1 says?
John was just a man. He was simply writing a history of Jesus' life and John 1 was a prologue. He starts with the baptism and then the wedding and water to wine. John was showing that this guy was not just someone doing magic tricks, but he had a divine origin. That's all. It is not about a definite article or not. It was all about that he existed in heaven as a spirit before he became human. Apparently John's audience didn't understand that.