Passage
In this is my Father glorified, that ye bear much fruit, and ye shall become disciples of mine.
John 15:8 (DBY)
Nearby Context
John 15:6 Unless any one abide in me he is cast out as the branch, and is dried up; and they gather them and cast them into the fire, and they are burned.
John 15:7 If ye abide in me, and my words abide in you, ye shall ask what ye will and it shall come to pass to you.
John 15:8 In this is my Father glorified, that ye bear much fruit, and ye shall become disciples of mine.
John 15:9 As the Father has loved me, I also have loved you: abide in my love.
John 15:10 If ye shall keep my commandments, ye shall abide in my love, as I have kept my Father's commandments and abide in his love.
Study Lenses
The verse centers on "glorified", "father", "bear", "much", "fruit", "shall", "become", and "disciples". It is saying that the verse draws attention to "glorified" and "father", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 7's "If ye abide in me and my..." into verse 9's "As the Father has loved me I...", so "glorified" and "father" 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 "glorified" and "father" with trust shaped by these words, not by a vague optimism outside the passage.