Passage
for they that sleep sleep by night, and they that drink drink by night;
for they that sleep sleep by night, and they that drink drink by night;
1 Thessalonians 5:5 for all *ye* are sons of light and sons of day; we are not of night nor of darkness.
1 Thessalonians 5:6 So then do not let us sleep as the rest do, but let us watch and be sober;
1 Thessalonians 5:7 for they that sleep sleep by night, and they that drink drink by night;
1 Thessalonians 5:8 but *we* being of [the] day, let us be sober, putting on [the] breastplate of faith and love, and as helmet [the] hope of salvation;
1 Thessalonians 5:9 because God has not set us for wrath, but for obtaining salvation through our Lord Jesus Christ,
The verse centers on "sleep", "night", and "drink". It is saying that the verse draws attention to "sleep" and "night", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 6's "So then do not let us sleep..." into verse 8's "but we being of the day let...", so "sleep" and "night" belong inside that flow. In 1 Thessalonians context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "sleep" and "night" with trust shaped by these words, not by a vague optimism outside the passage.