50 The master of that servant will come on a day he does not expect and at an hour he does not anticipate.
Matthew 24:50 Cross References - BSB
Proverbs 29:1
1 A man who remains stiff-necked after much reproof will suddenly be shattered beyond recovery.
Matthew 24:42-44
42 Therefore keep watch, because you do not know the day on which your Lord will come.
43 But understand this: If the homeowner had known in which watch of the night the thief was coming, he would have kept watch and would not have let his house be broken into.
44 For this reason, you also must be ready, because the Son of Man will come at an hour you do not expect.
1 Thessalonians 5:2-3
Revelation 3:3
3 Remember, then, what you have received and heard. Keep it and repent. If you do not wake up, I will come like a thief, and you will not know the hour when I will come upon you.