Passage
and that one having leant back on the breast of Jesus, respondeth to him, `Sir, who is it?'
and that one having leant back on the breast of Jesus, respondeth to him, `Sir, who is it?'
John 13:23 And there was one of his disciples reclining (at meat) in the bosom of Jesus, whom Jesus was loving;
John 13:24 Simon Peter, then, doth beckon to this one, to inquire who he may be concerning whom he speaketh,
John 13:25 and that one having leant back on the breast of Jesus, respondeth to him, `Sir, who is it?'
John 13:26 Jesus answereth, `That one it is to whom I, having dipped the morsel, shall give it;' and having dipped the morsel, he giveth <FI>it<Fi> to Judas of Simon, Iscariot.
John 13:27 And after the morsel, then the Adversary entered into that one, Jesus, therefore, saith to him, `What thou dost--do quickly;'
The verse centers on "having", "leant", "back", "breast", "jesus", and "respondeth". It is saying that the verse draws attention to "having" and "leant", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 24's "Simon Peter then doth beckon to this..." into verse 26's "Jesus answereth That one it is to...", so "having" and "leant" 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 "leant" with trust shaped by these words, not by a vague optimism outside the passage.