Passage
Now I have told you before it happens so that, when it happens, you may believe.
Now I have told you before it happens so that, when it happens, you may believe.
John 14:27 Peace I leave with you. My peace I give to you; not as the world gives, give I to you. Don’t let your heart be troubled, neither let it be fearful.
John 14:28 You heard how I told you, ‘I go away, and I come to you.’ If you loved me, you would have rejoiced, because I said ‘I am going to my Father;’ for the Father is greater than I.
John 14:29 Now I have told you before it happens so that, when it happens, you may believe.
John 14:30 I will no more speak much with you, for the prince of the world comes, and he has nothing in me.
John 14:31 But that the world may know that I love the Father, and as the Father commanded me, even so I do. Arise, let us go from here.
The verse centers on "told", "before", "happens", and "believe". It is saying that the verse draws attention to "told" and "before", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 28's "You heard how I told you I..." into verse 30's "I will no more speak much with...", so "told" and "before" 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 "told" and "before" with trust shaped by these words, not by a vague optimism outside the passage.