Revelation 16:15
[Note: At this point the Lord's voice breaks into John's vision]. ("Look, I am coming like a thief. That person is happy who stays alert and is dressed [properly], so he does not appear naked and have to be shamefully exposed").
Revelation 3:18
[Because of that], I advise you to buy from me gold, refined by fire, so that you will become rich; and white clothing to wear, so that you can cover yourself and not be seen as shamefully naked; and eye drops for your eyes, so that you can see. [Note: The foregoing all refer to taking measures for becoming more spiritual].
Matthew 24:42-43
Therefore be alert, for you do not know on what day the Lord will come.
Matthew 25:13
Therefore, you should be watchful, for you do not know the day or hour [i.e., when the Son of man will return].
Matthew 26:41
Be alert and pray, so that you do not give in to temptation; the spirit [of a person] is truly willing [i.e., to do a certain thing], but his physical nature is [often too] weak [to carry it out]."
Mark 13:33-37
"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].
Mark 14:38
Be alert and pray, so that you do not give in to temptation. The spirit of a person is truly willing [i.e., to do a certain thing], but his physical nature is [often] too weak [to carry it out]."
Luke 12:37-43
Those slaves whom their master finds being watchful when he returns are [certainly] blessed. Truly I tell you, he will fasten his belt [i.e., get things ready] and have them recline [at his dinner table] and will come and serve them.
Luke 21:36
But you should be alert at all times, offering earnest prayers, so that you will be strong enough to escape all these things that will happen, and to appear [acceptable] in front of the Son of man [on that day]."
Acts 20:31
So, be very watchful, and remember that for three years I never stopped warning every one of you [about such matters] both night and day with tears [in my eyes].
2 Corinthians 5:3
because when we are covered by it, we will not be found naked [i.e., without a suitable dwelling for our body].
1 Thessalonians 5:2-3
for you know perfectly well that the day of the Lord [i.e., when He returns, See II Thess. 2:1-2] will arrive like a thief coming in the night.
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].
1 Peter 4:7
But the end of everything [as far as your lives are concerned] is near, so be sensible, and sober [so as to be] prayerful.
2 Peter 3:10
But the day of the Lord will come as a thief [i.e., unexpectedly]. At that time the heavens will pass away with a loud noise and the elements [Note: This refers either to the heavenly bodies or to the material components of the universe], will be dissolved with intense heat. And the earth and its works [i.e., its activities] will be burned up. [Note: Some translations render this phrase as it is in some ancient manuscripts, "will be disclosed," or "will be laid bare"].
Revelation 3:3-4
So, remember how you have received and heard the message [i.e., they had eagerly accepted the Gospel]; [now] obey it and repent. For if you do not become [spiritually] alert, I will come as a thief [i.e. unexpectedly] and you will not know the [exact] time that I will come upon you [in judgment. See 2:16, 25].