However, it is to be noted that some older translations have added to chapter 5 the following words at the end of 5 verse 7b and the beginning of 5 verse 8a: “In heaven, the Father, the Word, and the Holy Ghost: and these three are one.
... 9. (a) What test is to be made of the inspired expressions? (b) What emphasizes the obligation to love one another?
9 Loving one another in union with God (4:1–5:21).