OET interlinear 1YHN (1JHN) 4:20

uW Translation Notes:

Note 1 topic: figures-of-speech / hypo

ἐάν τις εἴπῃ, ὅτι ἀγαπῶ τὸν Θεόν, καὶ τὸν ἀδελφὸν αὐτοῦ μισῇ, ψεύστης ἐστίν

if anyone /may/_say ¬that ˱I˲_/am/_loving ¬the God and the brother ˱of˲_him /may_be/_hating /a/_liar is

John is using a hypothetical situation to help his readers recognize the importance of consistency between their words and their actions. Alternate translation: “Suppose someone says, ‘I love God,’ but he hates his brother. Then he is a liar”

Note 2 topic: grammar-connect-logic-contrast

καὶ

and

John is using the word translated as and to introduce a contrast between what would be expected, that someone who loved God would also love his fellow believers, and what would actually be true of this hypothetical person. Alternate translation: “but”

Note 3 topic: figures-of-speech / metaphor

τὸν ἀδελφὸν αὐτοῦ

¬the the brother ˱of˲_him

See how you translated his brother in 2:9. Alternate translation: “one of his fellow believers”

Note 4 topic: figures-of-speech / doublenegatives

ὁ & μὴ ἀγαπῶν τὸν ἀδελφὸν αὐτοῦ & τὸν Θεὸν & οὐ δύναται ἀγαπᾶν

the_‹one› & not loving the brother ˱of˲_him & ¬the God & not /is/_able /to_be/_loving

If it would be helpful in your language, you could express this double negative by translating it as a positive statement. Alternate translation: “only the person who loves his fellow believers … is able to love God”

Note 5 topic: figures-of-speech / explicit

ὁ γὰρ μὴ ἀγαπῶν τὸν ἀδελφὸν αὐτοῦ, ὃν ἑώρακεν, τὸν Θεὸν, ὃν οὐχ ἑώρακεν, οὐ δύναται ἀγαπᾶν

the_‹one› for not loving the brother ˱of˲_him whom ˱he˲_/has/_seen ¬the God whom not ˱he˲_/has/_seen not /is/_able /to_be/_loving

If it would be helpful in your language, you could state explicitly why this is true. Alternate translation: “This is true because it is much easier to love your fellow believer who is right in front of you than to love God, whom you could not even see.”