Revelation 16:15
Behold, I come as a thief. Blessed is he that watches, and keeps his garments, that he may not walk naked, so that they should see his shame.
Revelation 3:18
I counsel you to buy of me gold tried in the fire, that you may be rich; and white apparel, that you may be clothed, and that the shame of your nakedness may not appear; and anoint your eyes with eye-salve, that you may see.
1 Peter 4:7
Now the end of all things has approached; be, therefore, sober, and watch to prayer.
2 Peter 3:10
However, as thief, the day of the Lord will come; in which the heavens shall pass away with a great noise, and the elements burning shall be dissolved; and the earth, and the works that are upon it, shall be utterly burned.
Revelation 3:3-4
Remember, therefore, how you have received and heard, and hold fast, and reform: therefore, unless you are watchful, I will come upon you as thief, and you shall not know what hour I will come upon you.