OET interlinear 2 TH 3:8

uW Translation Notes:

Note 1 topic: translate-unknown

ἄρτον

bread

Paul refers to bread here because it was the most common and basic food for them. If your readers would not be familiar with bread or if that is a kind of food that would be considered unusual or extravagant, you could use a general expression for ordinary food. Alternate translation: [food] or [anything]

Note 2 topic: figures-of-speech / merism

νυκτὸς καὶ ἡμέρας ἐργαζόμενοι

(Some words not found in SR-GNT: οὐδέ δωρεάν ἄρτον ἐφάγομεν παρά τινός ἀλλʼ ἐν κόπῳ καί μόχθῳ νυκτός καί ἡμέρας ἐργαζόμενοι πρός τό μή ἐπιβαρῆσαι τινά ὑμῶν)

Here, night and day forms a merism, which means “all the time.” If it would be helpful in your language to explain that they did not work without taking any rest whatsoever, then you could make the meaning clear. Alternate translation: [working throughout that time with little rest] or [we worked almost continuously]

Note 3 topic: figures-of-speech / doublet

ἐν κόπῳ καὶ μόχθῳ

in labor (Some words not found in SR-GNT: οὐδέ δωρεάν ἄρτον ἐφάγομεν παρά τινός ἀλλʼ ἐν κόπῳ καί μόχθῳ νυκτός καί ἡμέρας ἐργαζόμενοι πρός τό μή ἐπιβαρῆσαι τινά ὑμῶν)

Here, toil and hardship have very similar meanings. Paul used this repetition to emphasize that they worked very hard. If you do not have two similar words that you can use here or if it would be unnatural for you to use such repetition, you could emphasize this in another way. Alternate translation: [with great effort] or [in very difficult circumstances]