OET interlinear 1 YHN (1 JHN) 5:7

uW Translation Notes:

Note 1 topic: figures-of-speech / explicit

ὅτι τρεῖς εἰσιν οἱ μαρτυροῦντες

(Some words not found in SR-GNT: Ὅτι τρεῖς εἰσίν οἱ μαρτυροῦντες)

In this statement, John reaffirms that the three things that he mentions in verse 6 give us confidence that Jesus is the Son of God and came from him. If it would be helpful to your readers, you could indicate this explicitly. Alternate translation: [So there are three who testify that Jesus is God’s Son and came from him]

Note 2 topic: translate-textvariants

ὅτι τρεῖς εἰσιν οἱ μαρτυροῦντες

(Some words not found in SR-GNT: Ὅτι τρεῖς εἰσίν οἱ μαρτυροῦντες)

See the discussion of textual issues at the end of the General Notes to this chapter to decide whether to follow the reading of ULT or to follow the reading of some late manuscripts and say in your translation, “For there are three who testify in heaven: the Father, the Word, and the Holy Spirit; and these three are one. And there are three who testify on earth.” As the General Notes recommend, if you decide to use the longer reading, put it inside square brackets (`[ ]`) to indicate that it was most likely not in the original version of 1 John.

Note 3 topic: figures-of-speech / personification

οἱ μαρτυροῦντες

the_‹ones› testifying

Here John speaks of water and blood as though they were people who could testify, or speak about what they saw. If it would be helpful in your language, you could express the meaning plainly. Alternate translation: [ways that God has given us to know that he sent Jesus]