Matthew 24:48-51
But if that servant be wicked and say in his heart, my master delayeth his coming,
Mark 13:32-37
But of THAT day and hour knoweth no one, not even the angels in heaven, nor the Son, but the Father only.
Luke 21:34-36
Take heed to yourselves, least at any time your hearts be overcharged with surfeiting and drunkenness, and the cares of life, and so that day should come upon you unawares:
1 Thessalonians 5:2-3
for ye yourselves know full well, that the day of the Lord cometh like a thief in the night.
Revelation 3:3
Remember therefore how thou hast received and heard, and hold fast, and repent: for if thou be not watchful, I will come upon thee as a thief, and thou shalt not know at what hour I will come upon thee.