Passage
Having therefore received the morsel, he went out immediately; and it was night.
Having therefore received the morsel, he went out immediately; and it was night.
John 13:28 But none of those at table knew why he said this to him;
John 13:29 for some supposed, because Judas had the bag, that Jesus was saying to him, Buy the things of which we have need for the feast; or that he should give something to the poor.
John 13:30 Having therefore received the morsel, he went out immediately; and it was night.
John 13:31 When therefore he was gone out Jesus says, Now is the Son of man glorified, and God is glorified in him.
John 13:32 If God be glorified in him, God also shall glorify him in himself, and shall glorify him immediately.
The verse centers on "having", "therefore", "received", "morsel", "went", "immediately", and "night". It is saying that the verse draws attention to "having" and "therefore", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 29's "for some supposed because Judas had the..." into verse 31's "When therefore he was gone out Jesus...", so "having" and "therefore" 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 "having" and "therefore" with trust shaped by these words, not by a vague optimism outside the passage.