1 Thessalonians 5:1–6 (ESV)
1 Thessalonians 5:1 Now concerning the times and the seasons, brothers, you have no need to have anything written to you. 
1 Thessalonians 5:2 For you yourselves are fully aware that the day of the Lord will come like a thief in the night. 
1 Thessalonians 5:3 While people are saying, “There is peace and security,” then sudden destruction will come upon them as labor pains come upon a pregnant woman, and they will not escape. 
1 Thessalonians 5:4 But you are not in darkness, brothers, for that day to surprise you like a thief. 
1 Thessalonians 5:5 For you are all children of light, children of the day. We are not of the night or of the darkness. 
1 Thessalonians 5:6 So then let us not sleep, as others do, but let us keep awake and be sober.