Passage
and he looked at Jesus as He walked, and said, “Behold, the Lamb of God!”
John 1:36 (LSB)
Nearby Context
John 1:34 And I myself have seen, and have borne witness that this is the Son of God.”
John 1:35 On the next day, John again was standing with two of his disciples,
John 1:36 and he looked at Jesus as He walked, and said, “Behold, the Lamb of God!”
John 1:37 And the two disciples heard him speak and followed Jesus.
John 1:38 And when Jesus turned and noticed them following, He said to them, “What do you seek?” They said to Him, “Rabbi (which translated means Teacher), where are You staying?”
Study Lenses
The verse centers on "looked", "jesus", "walked", "said", "behold", and "lamb". It is saying that the verse draws attention to "looked" and "jesus", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 35's "On the next day John again was..." into verse 37's "And the two disciples heard him speak...", so "looked" and "jesus" 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 "looked" and "jesus" with trust shaped by these words, not by a vague optimism outside the passage.