Passage
Then he poureth water into the basin, and began to wash the disciples` feet, and to wipe them with the towel wherewith he was girded.
Then he poureth water into the basin, and began to wash the disciples` feet, and to wipe them with the towel wherewith he was girded.
John 13:3 [Jesus], knowing that the Father had given all the things into his hands, and that he came forth from God, and goeth unto God,
John 13:4 riseth from supper, and layeth aside his garments; and he took a towel, and girded himself.
John 13:5 Then he poureth water into the basin, and began to wash the disciples` feet, and to wipe them with the towel wherewith he was girded.
John 13:6 So he cometh to Simon Peter. He saith unto him, Lord, dost thou wash my feet?
John 13:7 Jesus answered and said unto him, What I do thou knowest not now; but thou shalt understand hereafter.
The verse centers on "poureth", "water", "basin", "began", "wash", "disciples", "feet", and "wipe". It is saying that the verse draws attention to "poureth" and "water", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 4's "riseth from supper and layeth aside his..." into verse 6's "So he cometh to Simon Peter He...", so "poureth" and "water" 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 "poureth" and "water" with trust shaped by these words, not by a vague optimism outside the passage.