John 15:1-11 Jesus gives the vine analogy to explain the relationship that we have with Jesus and the Father. Jesus is the vine. The Father takes care of the vine. We are the branches of the vine. If we obey and take the nutrients of the vine (Jesus), we will bear fruit (works for the Kingdom). If you refuse to take from the vine (Not a genuine believer), the vinedresser (The Father) removes you from the vine. The Father also prunes the branches (sanctification process) in order to help us produce more fruit. Apart from Jesus, we can do nothing.
John 15:12-17 Love one another as Jesus loves us. The greatest love you can show someone is to die for them or rather, die in their place, like Jesus did for us. Jesus now calls us friends for the Father has now been revealed to us. Jesus reminds the disciples that He chose them to go and bear fruit. If you are an obedient fruit bearing Christian, then God will answer your prayers.
Notes: Fruit - The NT describes fruit as:
Godly attitudes: (Gal. 5:22–23) But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control; against such things there is no law.
Righteous behavior: (Phil. 1:11) filled with the fruit of righteousness that comes through Jesus Christ, to the glory and praise of God.
Praise (Heb. 13:15) Through him then let us continually offer up a sacrifice of praise to God, that is, the fruit of lips that acknowledge his name.
Especially leading others to faith in Jesus as Messiah and Son of God (Rom. 1:13–16)
John 15:18-21 If you follow Jesus, expect the world to hate you. They will persecute you because of your belief in Jesus and the truth He proclaimed. They will also persecute you for obeying Christ commands. And the world will do this because they don’t know God, nor do they care about Him or his laws.
John 15:22-23 Before Jesus, the world could have used the excuse that they didn’t know they were sinners. But now, because Jesus has come and revealed all the Father has told Him to say to us (recorded in our Bibles), no one will have an excuse anymore, especially since Christ came to die for the very sin they refuse to give up. If people hate Jesus, then they really hate God, whether they say they believe in God or not. If they say they do believe in God, but hate Jesus, then the God they believe in is a false God, one of their own imaginations which will not hold up on the Day of Judgment.
John 15:24-27 Jesus says that His works He performed during His ministry was the proof that He is who He says He. Even though they saw, they still hated Jesus, and their unbelief in Him will cause their sins to remain and to be unforgiven. After Jesus is gone, the Holy Spirit will continue to bear witness of Jesus along with us until Jesus returns.