Passage
[As to] every branch in me not bearing fruit, he takes it away; and [as to] every one bearing fruit, he purges it that it may bring forth more fruit.
[As to] every branch in me not bearing fruit, he takes it away; and [as to] every one bearing fruit, he purges it that it may bring forth more fruit.
John 15:1 I am the true vine, and my Father is the husbandman.
John 15:2 [As to] every branch in me not bearing fruit, he takes it away; and [as to] every one bearing fruit, he purges it that it may bring forth more fruit.
John 15:3 Ye are already clean by reason of the word which I have spoken to you.
John 15:4 Abide in me and I in you. As the branch cannot bear fruit of itself unless it abide in the vine, thus neither [can] ye unless ye abide in me.
The verse centers on "branch", "bearing", "fruit", "takes", "away", and "purges". It is saying that the verse draws attention to "branch" and "bearing", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 1's "I am the true vine and my..." into verse 3's "Ye are already clean by reason of...", so "branch" and "bearing" 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 "branch" and "bearing" with trust shaped by these words, not by a vague optimism outside the passage.