The love among these “branches,” his disciples, will help them to endure what is to come. He warns them that the world will hate them, yet he offers this comfort: “If the world hates you, you know that it has hated me before it hated you. If you were part of the world, the world would be fond of what is its own. Now because you are no part of the world, . . . for this reason the world hates you.”​—John 15:18, 19.

Explaining further why the world will hate them, Jesus adds: “They will do all these things against you on account of my name, because they do not know the One who sent me.” Jesus says that his miraculous works, in effect, convict those who hate him: “If I had not done among them the works that no one else did, they would have no sin; but now they have both seen me and hated me as well as my Father.” Actually, their hatred fulfills prophecy.​—John 15:21, 24, 25; Psalm 35:19; 69:4.

Jesus and the apostles are poised to leave the upper room where they held the Passover meal. Having given them considerable admonition, Jesus adds: “I have said these things to you so that you may not be stumbled.” Why was such a warning appropriate? He tells them: “Men will expel you from the synagogue. In fact, the hour is coming when everyone who kills you will think he has offered a sacred service to God.”​—John 16:1, 2.

That may be troubling news for the apostles. Although Jesus had said earlier that the world would hate them, he had not directly told them that they would be killed. Why not? “I did not tell you these things at first, because I was with you,” he says. (John 16:4) Now he is forearming them before he departs. This may help them to avoid being stumbled later.