Passage
“Most certainly, I tell you, one who doesn’t enter by the door into the sheep fold, but climbs up some other way, the same is a thief and a robber.
“Most certainly, I tell you, one who doesn’t enter by the door into the sheep fold, but climbs up some other way, the same is a thief and a robber.
John 10:1 “Most certainly, I tell you, one who doesn’t enter by the door into the sheep fold, but climbs up some other way, the same is a thief and a robber.
John 10:2 But one who enters in by the door is the shepherd of the sheep.
John 10:3 The gatekeeper opens the gate for him, and the sheep listen to his voice. He calls his own sheep by name, and leads them out.
The verse centers on "sheep", "most", "certainly", "tell", "doesn", "enter", "door", and "fold". It is saying that the verse draws attention to "sheep" and "most", so its meaning should be read from those terms before moving to application.
The next verse adds "But one who enters in by the...", so "sheep" and "most" should be read forward into that movement. 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 "sheep" and "most" with trust shaped by these words, not by a vague optimism outside the passage.