Passage
Others were saying, “These are not the words of someone demon-possessed. Can a demon open the eyes of the blind?”
John 10:21 (LSB)
Nearby Context
John 10:19 A division occurred again among the Jews because of these words.
John 10:20 And many of them were saying, “He has a demon and is insane. Why do you listen to Him?”
John 10:21 Others were saying, “These are not the words of someone demon-possessed. Can a demon open the eyes of the blind?”
John 10:22 At that time the Feast of the Dedication took place at Jerusalem;
John 10:23 it was winter, and Jesus was walking in the temple in the Portico of Solomon.
Study Lenses
The verse centers on "others", "saying", "words", "someone", "demon-possessed", "open", and "eyes". It is saying that the verse draws attention to "others" and "saying", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 20's "And many of them were saying He..." into verse 22's "At that time the Feast of the...", so "others" and "saying" 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 "others" and "saying" with trust shaped by these words, not by a vague optimism outside the passage.