Matthew 24:48-51
But, if that evil servant shall say in his heart, 'My lord is delaying,'
Mark 13:32-37
But concerning that day or hour no one knows, not even the angels in Heaven, nor the Son, but the Father.
Luke 21:34-36
"But take heed to yourselves, lest at any time your hearts be weighed down with gluttony and drunkenness, and anxieties pertaining to life, and that day come upon you suddenly as a snare;
1 Thessalonians 5:2-3
for ye yourselves know accurately that the day of the Lord so comes as a thief at night.
Revelation 3:3
Remember, therefore, how you have received, and did hear; and keep it, and repent. If, therefore, you do not watch, I will come as a thief, and you shall not know at what hour I will come upon you.