Jesus performed many other signs in the presence of his disciples, which are not recorded in this book. But these are written that you may believe that Jesus is the Messiah, the Son of God, and that by believing you may have life in his name.
In John’s gospel account, the NIV translates the Greek word πιστεύω “believe” (or a tense of that) 84 times. To believe in John is to believe Jesus’s message which is a call to believe in him, that he is the one to come, the Messiah and Son of God (which are equivalents in the gospels), and to entrust oneself to him. John’s gospel account is full of sayings of Jesus pointing people to himself, like “I am the way and the truth and the life. No one comes to the Father except through me.” “I am the bread of life.” “I am the good shepherd.” “I am the light of the world.” “I am the resurrection and the life.” “Before Abraham was born, I am.”
And then there’s the signs, Jesus’s miracles, or mighty works. Throughout John, seven major signs. Jesus appealed to them when people didn’t believe in him. He said, “Even if you don’t believe me, believe the works themselves, that you may know that I’m in the Father, and that the Father is in me.”
Simply believing might be underrated in churches and Christians circles at times. The kind of faith our Lord refers to though is more than just believing so as to be drawn in. It refers to a commitment based on our Lord’s words, which call for nothing less than that. The idea that Christianity and Christian ethics is just about one’s works and not what one believes is so far divorced from actual Christianity. Completely foreign to Scripture, and John’s gospel. Of course works in a change of life follow. An indispensable part of the faith offered to us in and through Jesus.