John's Gospel was written with a specific purpose: to help readers believe that Jesus is the Messiah and experience true life through Him. Unlike other Gospel writers, John begins by revealing Jesus as the eternal Word who existed before creation. Through seven carefully chosen miracles, John shows that Jesus is the promised Anointed One who offers a preview of God's kingdom. These signs point to eternal celebration, complete healing, abundant provision, and perfect restoration. John emphasizes that Jesus wants to give us life - not just existence, but abundant life both now and eternally. The story of Thomas demonstrates that honest doubt can lead to profound faith when we encounter the risen Christ personally.