OET interlinear YHN (JHN) 8:26

uW Translation Notes:

Note 1 topic: figures-of-speech / infostructure

ἀλλ’ ὁ πέμψας με ἀληθής ἐστιν, κἀγὼ ἃ ἤκουσα παρ’ αὐτοῦ, ταῦτα λαλῶ εἰς τὸν κόσμον

but the_‹one› ˓having˒_sent (Some words not found in SR-GNT: πολλά ἔχω περί ὑμῶν λαλεῖν Καί κρίνειν ἀλλʼ ὁ πέμψας μέ ἀληθής ἐστίν κἀγώ ἅ ἤκουσα πάρʼ αὐτοῦ ταῦτα λαλῶ εἰς τόν κόσμον)

If it would be more natural in your language, you could change the order of these phrases and make a new sentence. Alternate translation: [But I will say to the world the things that I heard from him who sent me. He is true]

Note 2 topic: figures-of-speech / extrainfo

ὁ πέμψας με & παρ’ αὐτοῦ

the_‹one› ˓having˒_sent (Some words not found in SR-GNT: πολλά ἔχω περί ὑμῶν λαλεῖν Καί κρίνειν ἀλλʼ ὁ πέμψας μέ ἀληθής ἐστίν κἀγώ ἅ ἤκουσα πάρʼ αὐτοῦ ταῦτα λαλῶ εἰς τόν κόσμον)

These phrases refer to God. However, since the Jewish leaders did not understand what Jesus meant when he used these phrases, you do not need to explain their meaning further here.

ὁ πέμψας με ἀληθής ἐστιν

the_‹one› ˓having˒_sent (Some words not found in SR-GNT: πολλά ἔχω περί ὑμῶν λαλεῖν Καί κρίνειν ἀλλʼ ὁ πέμψας μέ ἀληθής ἐστίν κἀγώ ἅ ἤκουσα πάρʼ αὐτοῦ ταῦτα λαλῶ εἰς τόν κόσμον)

Here, true means to be truthful or to speak only the truth. If this use of true would be confusing in your language, you could express the meaning plainly. Alternate translation: [the one who sent me is truthful] or [the one who sent me tells the truth]

Note 3 topic: figures-of-speech / explicit

κἀγὼ ἃ ἤκουσα παρ’ αὐτοῦ, ταῦτα

(Some words not found in SR-GNT: πολλά ἔχω περί ὑμῶν λαλεῖν Καί κρίνειν ἀλλʼ ὁ πέμψας μέ ἀληθής ἐστίν κἀγώ ἅ ἤκουσα πάρʼ αὐτοῦ ταῦτα λαλῶ εἰς τόν κόσμον)

Jesus says that the one who sent him is true in order to imply that these things he heard and spoke are true. If it would be more natural in your language, you could state this explicitly. Alternate translation: [and the true things that I heard from him, these true things]

Note 4 topic: figures-of-speech / metonymy

ταῦτα λαλῶ εἰς τὸν κόσμον

these_‹things› ˱I˲_˓am˒_speaking to (Some words not found in SR-GNT: πολλά ἔχω περί ὑμῶν λαλεῖν Καί κρίνειν ἀλλʼ ὁ πέμψας μέ ἀληθής ἐστίν κἀγώ ἅ ἤκουσα πάρʼ αὐτοῦ ταῦτα λαλῶ εἰς τόν κόσμον)

John records Jesus using the world to refer to the people who live in the world. If this might confuse your readers, you could express the meaning plainly. Alternate translation: [these things I say to everyone]