# you, brothers

Here "brothers" means fellow Christians.

# are not in darkness

Paul speaks of evil and ignorance about God as if they were darkness. Alternate translation: "you are not unknowing, like people who live in the dark" (See: [[rc://en/ta/man/translate/figs-metaphor]])

# so that the day would overtake you like a thief

The day when the Lord comes should not be a surprise to believers. (See: [[rc://en/ta/man/translate/figs-simile]])