In this passage, Jesus says 'I am the true vine' and 'I am the vine' - another identity statement. Per John Stott - these are breathtaking, egocentric statements and the only way he could say these/claim these is because Jesus is God. The vine/the vineyard is Israel - an Old Testament metaphor for Israel was the vineyard. Jesus is saying 'I am replacing everything that God called Israel to be'. Jesus is saying there is only one way to God and that is through him; unless you are attached to Jesus, you will die. Attached to the vine, we are a new creation and attached to the vine, we will bear good fruit. The good news of the gospel is that Christ begins and completes a good work in us.