Passage
Many believed in him there.
Many believed in him there.
John 10:40 He went away again beyond the Jordan into the place where John was baptizing at first, and there he stayed.
John 10:41 Many came to him. They said, “John indeed did no sign, but everything that John said about this man is true.”
John 10:42 Many believed in him there.
The verse centers on "believed". It is saying that the verse draws attention to "believed" and "the identity of Jesus", so its meaning should be read from those terms before moving to application.
The prior verse says "Many came to him They said John...", giving immediate footing for "believed" and "the identity of Jesus". 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 "believed" with trust shaped by these words, not by a vague optimism outside the passage.