What does John 16:19 mean?
The disciples don't yet have the benefit of hindsight. As they listen to Jesus speaking at the Last Supper (John 13:1–5), they have not yet witnessed His arrest (John 18:1–3), crucifixion (John 19:18), and resurrection (John 20:19). They don't yet have the guidance of the Holy Spirit (John 16:7, 13). They certainly don't have the extensive resources which we, as modern believers, can access (Luke 1:1–4). So, when Jesus makes an obscure reference to being unseen, then seen, they are understandably confused (John 16:16–18).Even though the disciples are debating with each other, and not Christ, He still knows exactly what they are struggling with (John 2:24–25; Luke 6:8). What Jesus explains in the next few verses doesn't fully answer their question. However, it does provide more reassurance through perspective. The gist of His response is that these difficult experiences will be relatively brief, and joy over what is gained will vastly outweigh the suffering which was required (John 16:20–22).