Passage
If I had not done among them the works that no other man hath done, they would not have sin: but now they have both seen and hated both me and my Father.
John 15:24 (DRB)
Nearby Context
John 15:22 If I had not come and spoken to them, they would not have sin: but now they have no excuse for their sin.
John 15:23 He that hateth me hateth my Father also.
John 15:24 If I had not done among them the works that no other man hath done, they would not have sin: but now they have both seen and hated both me and my Father.
John 15:25 But that the word may be fulfilled which is written in their law: they hated me without cause.
John 15:26 But when the Paraclete cometh, whom I will send you from the Father, the Spirit of truth, who proceedeth from the Father, he shall give testimony of me.
Study Lenses
The verse centers on "done", "works", "other", "hath", "both", "seen", and "hated". It is saying that the verse draws attention to "done" and "works", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 23's "He that hateth me hateth my Father..." into verse 25's "But that the word may be fulfilled...", so "done" and "works" 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 "done" and "works" with trust shaped by these words, not by a vague optimism outside the passage.