Passage
Simon Peter says to him, Lord, not my feet only, but also my hands and my head.
John 13:9 (DBY)
Nearby Context
John 13:7 Jesus answered and said to him, What I do thou dost not know now, but thou shalt know hereafter.
John 13:8 Peter says to him, Thou shalt never wash my feet. Jesus answered him, Unless I wash thee, thou hast not part with me.
John 13:9 Simon Peter says to him, Lord, not my feet only, but also my hands and my head.
John 13:10 Jesus says to him, He that is washed all over needs not to wash save his feet, but is wholly clean; and ye are clean, but not all.
John 13:11 For he knew him that delivered him up: on account of this he said, Ye are not all clean.
Study Lenses
The verse centers on "simon", "peter", "says", "lord", "feet", "only", "hands", and "head". It is saying that the verse draws attention to "simon" and "peter", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 8's "Peter says to him Thou shalt never..." into verse 10's "Jesus says to him He that is...", so "simon" and "peter" 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 "simon" and "peter" with trust shaped by these words, not by a vague optimism outside the passage.