Treasury of Scripture Knowledge
"But pay attention to yourselves so that your hearts do not become overburdened by carousing, and drunkenness, and the worries of life. [If you do], that 'day' [i.e., Jesus' second coming and judgment] will arrive suddenly, like a trap [i.e., which catches an animal by surprise].
Therefore be alert, for you do not know on what day the Lord will come.
Therefore, you should be watchful, for you do not know the day or hour [i.e., when the Son of man will return].
"You should pay attention; be alert and pray, for you do not know when the time will come [i.e., for the Lord to return].
Now this [is another reason for observing the law of love]: You should know that it is about time to wake up out of your [spiritual] sleep, because [the day of our final] salvation is now nearer to us than when we first believed [in Christ].
1 Thessalonians 5:6
So then, we should not be [spiritually] asleep, like the rest [i.e., the unsaved world], but we should be alert and sober [i.e., in control of our senses].
2 Peter 3:12
[while] looking forward to, and earnestly desiring the day of God to come, when the heavens will be set ablaze and dissolved by fire and the elements [See verse 10] will melt with intense heat.
We should rejoice and be extremely glad, and we should give honor to Him. For the time has come for the Lamb's marriage, and His bride has prepared herself [for the wedding].