18 “If the world hates you, know that it has hated me before it hated you. 19 If you were of the world, the world would love you as its own; but because you are not of the world, but I chose you out of the world, therefore the world hates you. 20 Remember the word that I said to you: ‘A servant is not greater than his master.’ If they persecuted me, they will also persecute you. If they kept my word, they will also keep yours. 21 But all these things they will do to you on account of my name, because they do not know him who sent me. 22 If I had not come and spoken to them, they would not have been guilty of sin,  but now they have no excuse for their sin. 23 Whoever hates me hates my Father also. 24 If I had not done among them the works that no one else did, they would not be guilty of sin, but now they have seen and hated both me and my Father. 25 But the word that is written in their Law must be fulfilled: ‘They hated me without a cause.’
26 “But when the Helper comes, whom I will send to you from the Father, the Spirit of truth, who proceeds from the Father, he will bear witness about me. 27 And you also will bear witness, because you have been with me from the beginning. (ESV)
 15:22 Greek they would not have sin; also verse 24
. . . but these are written so that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name.