50 the master of that servant will come in a day when he least expects it, and at an hour he is not aware of;
Matthew 24:50 Cross References - Mace
Matthew 24:42-44
42 watch therefore, for ye know not at what hour your Lord shall come.
43 but this you conceive, that if a man knew at what hour of the night the thief would come, he would set a watch, and not suffer his house to be broke open.
44 therefore be ye also prepar'd: for the son of man may come at an hour you least expect.
1 Thessalonians 5:2-3
Revelation 3:3
3 remember therefore what thou hast received and heard: observe it and repent. if therefore thou art not vigilant, I will come upon thee as a thief, thou shalt not know what hour I will come upon thee.