Passage
If I had not come and spoken vnto them, they shoulde not haue had sinne: but nowe haue they no cloke for their sinne.
If I had not come and spoken vnto them, they shoulde not haue had sinne: but nowe haue they no cloke for their sinne.
John 15:20 Remember the word that I said vnto you, The seruant is not greater then his master. If they haue persecuted me, they will persecute you also: if they haue kept my worde, they will also keepe yours.
John 15:21 But all these things will they doe vnto you for my Names sake, because they haue not knowen him that sent me.
John 15:22 If I had not come and spoken vnto them, they shoulde not haue had sinne: but nowe haue they no cloke for their sinne.
John 15:23 He that hateth me, hateth my Father also.
John 15:24 If I had not done workes among them which none other man did, they had not had sinne: but nowe haue they both seene, and haue hated both me, and my Father.
The verse centers on "come", "spoken", "vnto", "shoulde", "haue", "sinne", and "nowe". It is saying that the verse draws attention to "come" and "spoken", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 21's "But all these things will they doe..." into verse 23's "He that hateth me hateth my Father...", so "come" and "spoken" 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 "come" and "spoken" with trust shaped by these words, not by a vague optimism outside the passage.