17 So this is my law for you: Have love one for another.
18 If you are hated by the world, keep in mind that I was hated by the world before you. 19 If you were of the world, you would be loved by the world: but because you are not of the world, but I have taken you out of the world, you are hated by the world. 20 Keep in mind the words I said to you, A servant is not greater than his lord. If they were cruel to me, they will be cruel to you; if they kept my words, they will keep yours. 21 They will do all this to you because of my name—because they have no knowledge of him who sent me. 22 If I had not come and been their teacher they would have had no sin: but now they have no reason to give for their sin. 23 He who has hate for me has hate for my Father. 24 If I had not done among them the works which no other man ever did, they would have had no sin: but now they have seen, and they have had hate in their hearts for me and my Father. 25 This comes about so that the writing in their law may be made true, Their hate for me was without cause.
26 When the Helper comes, whom I will send to you from the Father even the Spirit of true knowledge who comes from the Father—he will give witness about me; 27 And you, in addition, will give witness because you have been with me from the first.
Matthew Henry's Commentary on John 15:17-27
Commentary on John 15:9-17
(Read John 15:9-17)
Those whom God loves as a Father, may despise the hatred of all the world. As the Father loved Christ, who was most worthy, so he loved his disciples, who were unworthy. All that love the Saviour should continue in their love to him, and take all occasions to show it. The joy of the hypocrite is but for a moment, but the joy of those who abide in Christ's love is a continual feast. They are to show their love to him by keeping his commandments. If the same power that first shed abroad the love of Christ's in our hearts, did not keep us in that love, we should not long abide in it. Christ's love to us should direct us to love each other. He speaks as about to give many things in charge, yet names this only; it includes many duties.
Commentary on John 15:18-25
(Read John 15:18-25)
How little do many persons think, that in opposing the doctrine of Christ as our Prophet, Priest, and King, they prove themselves ignorant of the one living and true God, whom they profess to worship! The name into which Christ's disciples were baptized, is that which they will live and die by. It is a comfort to the greatest sufferers, if they suffer for Christ's name's sake. The world's ignorance is the true cause of its hatred to the disciples of Jesus. The clearer and fuller the discoveries of the grace and truth of Christ, the greater is our sin if we do not love him and believe in him.
Commentary on John 15:26-27
(Read John 15:26-27)
The blessed Spirit will maintain the cause of Christ in the world, notwithstanding the opposition it meets with. Believers taught and encouraged by his influences, would bear testimony to Christ and his salvation.