50 the lord of that servant will come in a day when he does not expect it, and in an hour when he does not know it,
Matthew 24:50 Cross References - NHEB
Proverbs 29:1
1 He who is often rebuked and stiffens his neck will be destroyed suddenly, with no remedy.
Matthew 24:42-44
42 Watch therefore, for you do not know on what day your Lord comes.
43 But know this, that if the master of the house had known in what watch of the night the thief was coming, he would have watched, and would not have allowed his house to be broken into.
44 Therefore also be ready, for in an hour that you do not expect, the Son of Man will come.
1 Thessalonians 5:2-3
Revelation 3:3
3 Remember therefore how you have received and heard. Keep it, and repent. If therefore you do not wake up, I will come as a thief, and you won't know what hour I will come to you.