Passage
They will put you out of the synagogues: yea, the hour cometh, that whosoever killeth you will think that he doth a service to God.
John 16:2 (DRB)
Nearby Context
John 16:1 These things have I spoken to you things have I spoken to you that you may not be scandalized.
John 16:2 They will put you out of the synagogues: yea, the hour cometh, that whosoever killeth you will think that he doth a service to God.
John 16:3 And these things will they do to you; because they have not known the Father nor me.
John 16:4 But these things I have told you, that when the hour shall come, you may remember that I told you of them.
Study Lenses
The verse centers on "synagogues", "hour", "cometh", "whosoever", "killeth", "think", "doth", and "service". It is saying that the verse draws attention to "synagogues" and "hour", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 1's "These things have I spoken to you..." into verse 3's "And these things will they do to...", so "synagogues" and "hour" belong inside that flow. In John context, the local focus is the identity of Jesus, new birth, eternal life, and belief and unbelief.
A plain takeaway is to answer the verse's own emphasis on "synagogues" and "hour" with trust shaped by these words, not by a vague optimism outside the passage.