Passage
these things I have spoken to you, that my joy in you may remain, and your joy may be full.
these things I have spoken to you, that my joy in you may remain, and your joy may be full.
John 15:9 According as the Father did love me, I also loved you, remain in my love;
John 15:10 if my commandments ye may keep, ye shall remain in my love, according as I the commands of my Father have kept, and do remain in His love;
John 15:11 these things I have spoken to you, that my joy in you may remain, and your joy may be full.
John 15:12 `This is my command, that ye love one another, according as I did love you;
John 15:13 greater love than this hath no one, that any one his life may lay down for his friends;
The verse centers on "things", "spoken", "remain", and "full". It is saying that the verse draws attention to "things" and "spoken", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 10's "if my commandments ye may keep ye..." into verse 12's "This is my command that ye love...", so "things" and "spoken" 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 "things" and "spoken" with trust shaped by these words, not by a vague optimism outside the passage.