OET interlinear YHN (JHN) 1:47

uW Translation Notes:

Note 1 topic: figures-of-speech / pastforfuture

λέγει

˱he˲_˓is˒_saying

Here John uses the present tense in past narration in order to call attention to a development in the story.

Note 2 topic: figures-of-speech / metaphor

ἴδε

(Some words not found in SR-GNT: εἶδεν Ὁ Ἰησοῦς τόν Ναθαναήλ ἐρχόμενον πρός αὐτόν καί λέγει περί αὐτοῦ Ἴδε ἀληθῶς Ἰσραηλίτης ἐν ᾧ δόλος οὐκ ἐστίν)

John records Jesus using the term Behold to call his audience’s attention to what he is about to say. Your language may have a similar expression that you can use here.

Note 3 topic: figures-of-speech / litotes

ἐν ᾧ δόλος οὐκ ἔστιν

in whom deceit not (Some words not found in SR-GNT: εἶδεν Ὁ Ἰησοῦς τόν Ναθαναήλ ἐρχόμενον πρός αὐτόν καί λέγει περί αὐτοῦ Ἴδε ἀληθῶς Ἰσραηλίτης ἐν ᾧ δόλος οὐκ ἐστίν)

Jesus is using a figure of speech that expresses a strong positive meaning by using a negative word together with a word that means the opposite of the intended meaning. If this is confusing in your language, you can express the meaning positively. Alternate translation: [a completely truthful man]