John 15:21

But all these things will they do unto you for my name's sake, because they know not him that sent me.

All these things ... are the hatred, disobedience, mockery, persecution, lying trials, scourging, and death itself, etc., which marked the treatment of Christ by the world; and Jesus' promise here is that nothing will be left out in the world's similar treatment of the apostles. The holy Saviour was the object of Satan's unrelenting scorn, hatred, and opposition; and the apostles who would bear his name before kings, Gentiles, and the children of Israel would incur the full measure of satanic opposition. That Satan is actually the author of all such opposition is implicit in the fact that long after that generation had descended into the grave, the same bitterness and hatred continued against the truth, only with a new set of human opponents in each succeeding generation. Only Satan could continue unabated the organization, marshaling, and deployment of his devices in one unending campaign throughout all history, with a hundred generations in turn playing out the same role of hating the Saviour of the world, telling the same lies, sneering the same sneers, sinning the same sins, repeating the same mockeries, and shutting their eyes to the same truths - just like always! In nearly two millennia NOT ONE NEW THING has been alleged by the devil and his servants against the Christ of glory. The war has already been won, but so many do not know it.