Augustine of Hippo
Catena Aurea · Johannesevangelium 16
These things have I spoken unto you, that ye should not be offended. They shall put you out of the synagogues: yea, the time cometh, that whosoever killeth you will think that he doeth God service. And these things will they do unto you, because they have not known the Father, nor me. But these things have I told you, that when the time shall come, ye may remember that I told you of them. And these things I said not unto you at the beginning, because I was with you.
(Tr. xciii) But what evil was it to the Apostles to be put out of the Jewish synagogues, which they would have gone out of, even if none had put them out? Our Lord wished to make known to them, that the Jews were about not to receive Him, while they on the other hand were not going to desert Him. There was no other people of God beside the seed of Abraham: if they acknowledged Christ, the Churches of Christ would be none other than the synagognes of the Jews. But inasmuch as they refused to acknowledge Him, nothing remained but that they should put out of the synagogue those who would not forsake Christ. He adds: But the time cometh, that whoever killeth you, will think that he doeth God service. Is this intended for a consolation, as if they would so take to heart their expulsion from the synagogues, that death would be a positive relief to them after it? God forbid that they who sought God’s glory, not men’s, should be so disturbed. The meaning of the words is this: They shall put you out of the synagogue, but do not be afraid of being left alone. Separated from their assemblies, ye shall assemble so many in my name, that they fearing that the temple and rites of the old law will be deserted, will kill you, and think to do God service thereby, having a zeal for God, but not according to knowledge. These who kill, are the same with those who put out of the synagogues, viz. the Jews. For Gentiles would not have thought that they were doing God service, by killing Christ’s witnesses, but their own false gods; whereas every one of the Jews, who killed the preacher of Christ, thought he was doing God service, believing that whoever were converted to Christ, deserted the God of Israel.