Matthew 24:48-51
But if that wicked servant shall say in his heart, My master delays his coming;
Mark 13:32-37
But of that day or that hour no one knows: neither the angels who are in heaven, nor the Son, but the Father.
Luke 21:34-36
And take heed to yourselves, lest your hearts become heavy with reveling and drunkenness and the cares of life, and that day come upon you when you look not for it.
1 Thessalonians 5:2-3
for you yourselves know perfectly that the day of the Lord so comes as a thief in the night:
Revelation 3:3
Remember, therefore, how you have received and heard, and be watchful and repent. If, therefore, you do not watch, I will come upon you as a thief, and you shall not know at what hour I will come upon you.